Note: Descriptions are shown in the official language in which they were submitted.
CA 02455380j2004-01-19
FLAME SIMULATING ASSEMBLY
FIELD OF THE INVENTION
[0001] The present invention relates to a flame simulating assembly for
providing one or more images of flames, and more particularly, a flame
simulating assembly for transmitting one or more images of flames through two
screens.
BACKGROUND OF THE INVENTION
[0002] Various types of flame simulating assemblies are known. Often, a
flame simulating assembly is designed to be included in an olectric fireplace,
to
simulate a fire in a real fireplace in which wood or coal is burned. For
example,
U.S. Patent No. 4,965,707 (Butterfield) discloses a simulated flame system for
an
electric fireplace in which a light source is combined with billowing ribbons
to
simulate flames. The effect resulting generally resembles flames from a coal
fuel
source more than flames from a wood fuel source. The flames for burning
wooden logs tend to be more active and extend higher above the fuel source.
[0003] On occasion, a two-sided flame simulating a$1sembly is needed.
The need typically arises where a two-sided flame simulating assembly is to be
included in an interior wall, so that a flame simulating assembly can
simultaneously be enjoyed by those in the rooms on both sides of the interior
wall.
[0004] Typically, a two-sided flame simulating assembly is created by
simply positioning two conventional flame simulating assemblies back-to-back,
i.e., a back wall of a first conventional flame simulating assembly is
positioned
adjacent to a back wall of a second conventional flame sirnulating assembly.
Alternatively, a two-sided flame simulating assembly is often created by
attaching
two conventional flame simulating assemblies together, baok-to-back. Typical
two-sided flame simulating assemblies, created by combining conventional flame
CA 02455380 2004-01-19
simulating assemblies, have a number of disadvantages. First, combining two
conventional flame simulating assemblies to form a two-sided flame simulating
assembly is only feasible where the interior wall in which the conventional
flame
simulating assemblies are to be positioned is sufficiently thiok to receive
them.
Second, using two conventional flame simulating assemblies back-to-back is
relatively expensive, as all of the materials and controls for each of the
conventional units are duplicated.
[0005] In addition, because two conventional units posi'tioned back-to-back
are relatively broad, an interior wall in which the two converltional back-to-
back
units are received often has barely enough thickness for the purpose. The
result
is that screens in the conventional back-to-back flame sirriulating assemblies
through which simulated flames are viewable tend to be relatively closely
positioned to an observer. This is undesirable because, in general, where
there
is more distance between the observer and the screen, the simulated flames
tend to be perceived by the observer as being more realistic.
[0006] Also, where two conventional flame simulating assemblies are
combined into a typical two-sided flame simulating assembly, the effects
resulting
are essentially the same simulated flames produced by each of the conventional
flame simulating assemblies operating separately. Achieving any additional or
somewhat improved effects is not feasible where two conventional flame
simulating assemblies are combined.
[0007] There exists a need for a flame simulating assembly adapted to
provide images of flames transmitted through two screens to overcome at least
some of the deficiencies of the prior art.
SUMMARY OF THE INVENTION
[0008] In a broad aspect of the present invention, there is provided a flame
simulating assembly for providing one or more images of flames. The flame
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simulating assembly has one or more light sources, a first screen, and a
second
screen. The first screen is positioned in a first path of light from the light
source.
The first screen is adapted to receive light from the light source to form the
image
of flames transmittable through the first screen. The second 5creen is
positioned
in a second path of light form the light source. The second screen is also
adapted to receive light from the light source to form the image of flames
transmittable through the second screen.
[0009] In another aspect, the invention additionally includes a flame effect
element for configuring light from the light source to produce one or more
images
of flames. The flame effect element is positioned in paths of light between
the
light source and the first screen and also between the light source and the
second screen.
[0010] In another aspect, the invention provides a flame simulating
assembly additionally including a first flicker element for creating a
fluctuating
light to produce a first image of flames transmitted through the first screen.
The
first flicker element is positioned in the first path of light between the
light source
and the first screen.
[0011] In yet another aspect, the invention provides a flame simulating
assembly additionally including a second flicker element for creating a
fluctuating
light to produce a second image of flames transmitted through the second
screen, the second flicker element being positioned in the 'gecond path of
light
between the light source and the second screen.
[0012] In yet another of its aspects, the invention provides a flame
simulating assembly additionally including two one simulated fuel beds
positioned adjacent to the screens so that the images of flames transmitted
through the screens are positioned proximal to the simulated fuel beds
respectively.
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[0013] In another aspect, the invention provides a flame simulating
assembly for providing at least one image of flames. The flame simulating
assembly has a first simulated fuel bed, a second simulated fuel bed, one or
more light sources, a first screen, and a second screen. The first screen
includes
a first front surface and is positioned behind the first simulated fuel bed in
a first
path of light from the light source, for transmitting the image of flames
through
the first front surface proximal to the first simulated fuel bed. The second
screen
includes a second front surface and is positioned behind the second simulated
fuel bed in a second path of light from the light source, for transmitting the
image
of flames through the second front surface proximal to the second simulated
fuel
bed.
[0014] In yet another of its aspects, the invention provides a flame
simulating assembly for providing one or more images of flames. The flame
simulating assembly has a light source, a first screen, a second screen, and a
flame effect element positioned in a path of light between the light source
and the
first and second screens respectively. The flame effect element is adapted to
configure light from the light source to form images of flames transmittable
through the first and second screens respectively.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The invention can be better understood by reference to the
attached drawings, in which:
[0016] Fig. 1 is an isometric view of a first side of a preferred embodiment
of the flame simulating assembly showing a first screen and a first simulated
fuel
bed;
[0017] Fig. 2 is an isometric view of a second side of the flame simulating
assembly of Fig. 1, with certain elements removed for illustrative purposes;
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CA 02455380 2004-01-19
[0018] Fig. 3 is an elevation view of the first side of the flame simulating
assembly of Fig. 1;
[0019] Fig. 4 is an isometric side view of the flame simulating assembly of
Fig. I with certain elements removed for illustrative purposes, drawn at a
larger
scale;
[0020] Fig. 5 is a side view of the flame simulating assembly of Fig. 1;
[0021] Fig. 6 is a cross section of the flame simulating assembly of Fig. 3
with certain elements removed for illustrative purposes, taken along line 6-6
in
Fig. 3;
[0022] Fig. 7 is a cross section of the flame simulating assembly of Fig. 3
with certain elements removed for illustrative purposes, taken along line 7-7
in
Fig. 3;
[0023] Fig. 8 is a side view of another embodiment of the flame simulating
assembly, with certain elements removed for illustrative purposes;
[0024] Fig. 9 is a cross section viewed from the top of the flame simulating
assembly of Fig. 8, with certain elements removed for illustrative purposes;
[0025] Fig. 10 is an isometric view of another embodiment of the flame
simulating assembly including a flame effect element with reflective portions
thereon, with certain elements removed for illustrative purposes, drawn at a
smaller scale;
[0026] Fig. 11 is a cross section viewed from the side of the flame
simulating assembly of Fig. 10 with certain elements removed for illustrative
purposes, drawn at a larger scale;
CA 02455380 2004-01-19
[0027] Fig. 12 is a cross section viewed from thie side of another
embodiment of the flame simulating assembly including a flpme effect element
with a cutout portion and a reflective portion and a single flicker element;
[0028] Fig. 13 is an elevation view of a first side of the flame effect
element included in the flame simulating assembly of Fig. 12, drawn at a
larger
scale;
[0029] Fig. 14 is an elevation view of a second side of the flame effect
element of Fig. 13;
[0030] Fig. 15 is a front view of another embodirnent of the flame
simulating assembly of the invention, drawn at a smaller scale;
[0031] Fig. 16 is a cross section of the flame simulatirtg assembly of Fig.
15 taken along line 16-16 in Fig. 15, drawn at a larger scale;
[0032] Fig. 17 is a cross section of the flame simulating assembly of Fig.
15, taken along line 17-17 of Fig. 15;
[0033] Fig. 18 is a front view of a screen included in the flame simulating
assembly of Fig. 15, drawn at a larger scale;
[0034] Fig. 19 is a front view of an alternative embodimpnt of a screen;
[0035] Fig. 20 is a cross section of another alternative embodiment of the
flame simulating assembly viewed from the top and showing two simulated fuel
beds mounted in the flame simulating assembly, drawn at a srttnaller scale;
[0036] Fig. 21 is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly;
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>,.
CA 02455380 2004-01-19
[0037] Fig. 22 is a cross section viewed from the side of another
embodiment of the flame simulating assembly;
[0038] Fig. 23 is a cross section viewed from the side of another
embodiment of the flame simulating assembly;
[0039] Fig. 24 is a cross section viewed from the side of another
embodiment of the flame simulating assembly;
[0040] Fig. 25 is a cross section viewed from the top of the flame
simulating assembly of Fig. 24;
[0041] Fig. 26 is an isometric view of another alternative embodiment of
the flame effect element, drawn at a larger scale;
[0042] Fig. 27A is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly, drawn at a smaller
scale;
[0043] Fig. 27B is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly;
[0044] Fig. 27C is an isometric view of another alternaltive embodiment of
the flame effect element showing a second side thereof, drawn at a larger
scale;
[0045] Fig. 27D is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly, drawn at a smaller
scale;
[0046] Fig. 28A is an isometric view of another alternative embodiment of
the flame effect element, drawn at a larger scale;
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CA 02455380 2004-01-19
[0047] Fig. 28B is a cross section viewed from the side of another
alternative embodiment of the flame simuiating assembly, drawn at a smaller
scale;
[0048] Fig. 28C is an isometric view of another alternative embodiment of
the flame effect element showing a second side thereof, drawn at a larger
scale;
[0049] Fig. 28D is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly, drawn at a smaller
scale;
[0050] Fig. 29A is an elevation view of a first side of another alternative
embodiment of the flame effect element, drawn at a larger sc.1le;
[0051] Fig. 29B is an elevation view of a second side of another alternative
embodiment of the flame effect element;
[0052] Fig. 30A is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly, drawn at a smaller
scale;
[0053] Fig. 30B is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly; and
[0054] Fig. 30C is a cross section viewed from the side of another
alternative embodiment of the flame simulating assembly.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
[0055] Reference is first made to Figs. 1-7 to describe a preferred
embodiment of a flame simulating assembly indicated generally by the numeral
30 in accordance with the invention. The flame simulating assembly 30 is for
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CA 02455380 2004-01-19
providing one or more images of flames 31 and includes one or more light
sources 36, a first screen 32, and a second screen 38 (Fig. 5). In the
preferred
embodiment, the first screen 32 is positioned in a first path of light 55
(represented by arrows 47, 48, shown in Fig. 5) from the light source 36, and
the
second screen 38 is positioned in a second path of light 57 (represented by
arrows 49, 50, shown in Fig. 5) from the light source 36, as will be
described.
The first screen 32 is adapted to receive light from the light source 36 to
form the
image of flames 31, which is transmitted through the first screen 32. In
addition,
the second screen 38 is adapted to receive light from the light source 36 to
form
the image of flames 31, which is transmitted through the seoond screen 38, as
will be described.
[0056] Preferably, the first screen 32 and the second screen 38 at least
partially define planes 40, 42 respectively (Fig. 5). As can be seen in Fig.
5, the
light source 36 is positioned substantially between the planes 40, 42.
Preferably,
the light source 36 is also positioned below the first screen 32 and the
second
screen 38.
[0057] In the preferred embodiment, and as shown in Figs. 4 - 6, the flame
simulating assembly 30 additionally includes first and second flicker elements
44,
46 respectively for creating a fluctuating light. The first flicker element 44
is
positioned in the first path of light 55 between the light soulrce 36 and the
first
screen 32 (Fig. 5). Similarly, the second flicker element 46 is positioned in
a
second path of light 57 between the light source 36 and the second screen 38.
The fluctuating light from the light source 36 is transmitted through the
first
screen 32 and the second screen 38 respectively to produce one or more images
of flames 31 appearing through the first screen 32 and the second screen 38
simultaneously.
[0058] Preferably, the flame simulating assembly 30 additionally includes a
flame effect element 52 positioned between the first screen 32 and the second
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CA 02455380 2004-01-19
screen 38, for configuring light from the light source 36 to simulate flames,
i.e., to
form one or more images of flames 31.
[0059] It is also preferred that the flame simulqting assembly 30
additionally includes a first simulated fuel bed 34 positioned adjacent to the
first
screen 32. The first simulated fuel bed 34 is located relative to the first
screen 32
so that the image of flames 31 which is transmitted through the first screen
32 is
positioned proximal to the first simulated fuel bed 34 (Figs. 1, 3 and 5). In
the
preferred embodiment, the flame simulating assembly 30 additionally includes a
second simulated fuel bed 54 positioned adjacent to the second screen 38. The
second simulated fuel bed 54 is also located relative to the second screen 38
so
that the image of flames 31 which is transmitted through the second screen 38
is
positioned proximal to the second simulated fuel bed 54 (Figs. 12 - 16, 17,
20,
21).
[0060] It will be understood that certain elements of the flame simulating
assembly 30 are omitted from certain of the drawings, solely for the purposes
of
clarity, although such omitted elements are included in the flame simulating
assembly 30. For example, the second screen 38 is omitted from Figs. 2, 4 and
7
in order to show details of the construction of the flame simulating assembly
30,
as will be described. It will also be appreciated that a second simulated fuel
bed
54 (Fig.12) is omitted from Figs. 2 and 4 - 7 in order to show details of the
construction of the flame simulating assembly 30 which would otherwise not be
shown. The second screen 38 is shown in Figs. 5, 6, and 21 (among others),
and the second simulated fuel bed 54 is shown in Figs. 20 and 21 (among
others).
[0061] For clarity, an image of flames 31 is illustrated ih Figs. 1, 3, and 15
in ghost outline. It will be understood that, in the preferred embodiment, the
image of flames is constantly changing (in shape and in intensity of light,
and
color) while the flame simulating assembly 30 is operating, due to the
flickering
and fluctuating of the light from the light source forming the image of
flames. The
CA 02455380 2004-01-19
flickering and fluctuating of the image of flames (resulting from the flicker
elements) resembles the fluctuations of the flames in a real fire, for
example, a
fire in which the fuel is wood or coal.
[0062] Although other types of flicker elements could be used, preferably,
the flicker elements 44, 46 are of the type (i.e., the "rotisserie" type)
described in
U.S. Patent No. 5,642,580, in which a plurality of reflective strips 51 are
radially
arranged around a central axis 53 (Fig. 7.) The preferred embodiment of the
flicker element 44 can best be seen in Fig. 7. (For purposes of illustration,
the
plurality of strips 51 is represented in Fig. 4 by single examples of the
strips, it
being understood that the flicker elements 44, 46 include several reflective
strips
51, as shown (in the case of flicker element 44) in Fig. 7.) As is known in
the art,
the flicker elements 44, 46 are rotated by electric motors (not shown). In the
preferred embodiment, the flame simulating assembly 30 includes separate
controls (not shown) for each flicker element 44, 46 respectively. This
permits
the flicker elements 44, 46 to rotate at different speeds respectively,
thereby
resulting in images of flames 31 which flicker at different speeds (simulating
a
more rapidly burning fire, where the flicker element is rotating more rapidly
and a
more slowly burning fire, where the flicker element is rotating more slowly)
appearing through the first and second screens 32, 38 respectively.
[0063] As can be seen in Fig. 2, in the preferred embodiment, the flame
simulating assembly 30 includes a housing 56 constructed primarily of sheet
metal panels, suitably bent or otherwise formed and fastenep together by
rivets
or other suitable fasteners, as is known in the art. (The hbusing 56 can also
include any other suitable materials, in any suitable combinsitions.)
Preferably,
the housing 56 includes screen frames 58 for receiving and supporting each of
the first screen 32 and the second screen 38 in position. Also, the housing 56
includes flame effect element supports 60 positioned at the ends of the flame
effect element 52, for maintaining the flame effect element $2 in a
substantially
vertical position, as can best be seen in Fig. 2. Top panels 43 and a bottom
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CA 02455380 2004-01-19
panel 59 also provide structural strength to the housing 56 (Fig. 6). A deck
portion 62 includes an aperture 64 with a ledge 66 around part of the
perimeter
thereof, the ledge 66 being adapted for supporting the simulated fuel beds 34,
54
above the apertures 64.
[0064] Preferably, the screens are made of glass. Alternatively, a suitable
polycarbonate (such as plexiglas) or a suitable acrylic material can be used,
or
any other suitable materials. Preferably, the front surfaces of the screens
are
partially reflective, but this is not necessary. The screens could be suitably
tinted
or treated in any suitable manner to achieve any desired effects.
[0065] In the preferred embodiment, the flame effect element 52 includes
apertures 68 adapted to configure light passing through the apertures 68 into
one
or more images of flames 31. The flame effect element 52 preferably comprises
sheet metal in which the apertures 68 have been formed by Cutting or stamping.
The apertures 68 are shaped to form flame images, as can be seen in Figs. 2
and 4.
[0066] In use, as can be seen in Fig. 2, light from the light source 36 is
reflected from the first flicker element 44 through the apertures 68 in the
flame
effect element 52 to the first screen 32. The first path of light 55 from the
light
source 36 to the flicker element 44 and through the apertUres 68 to the first
screen 32 is represented in Fig. 2 by arrows 47, 48. The image of flames 31
that
results (not shown in Fig. 2) is transmitted through the first screen 32.
Still
referring to Fig. 2, it will be appreciated that the second screen 38 and the
second simulated fuel bed 54 are not included in this drawing in order to show
the first path of light 55. As can be seen in Fig. 5, the second path of light
57
generally corresponds to the first path of light 55, as light from the light
source 36
simultaneously is reflected from the second flicker element 46 through the
aperture 68 in the flame effect element 52 to the second screen 38. The image
of flames 31 that results is transmitted through the second screen 38
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CA 02455380 2004-01-19
simultaneously with the transmission of the image of flames 31 through the
first
screen 32.
[0067] Each of the screens 32, 38 has a front surface 67 positioned
adjacent to the simulated fuel beds 34, 54 respectively, and a back surface
69,
through which light from the light source 36 is transmitted into the screen
32, 38.
As will be described, the front surface 67 may or may not bo partially
reflective,
and the back surface 69 preferably diffuses light but also transmits light.
The
images of flames 31 are transmitted through the front surfaces 67 of the first
screen 32 and the second screen 38.
[0068] As can be seen in Fig. 2, the aperture 64 permits light from the light
source 36 to follow the first path of light 55. However, it will be understood
that in
normal operating conditions, the aperture 64 (shown in Fig. 2) is below the
second simulated fuel bed 54, and not observable by a viewer (not shown).
Also,
an aperture similar to the aperture 64 is positioned beneath the first
simulated
fuel bed 34. Light from the light source 36 therefore also illuminates the
undersides of the simulated fuel beds 34, 54 through the apertures 64, as will
be
described.
[0069] The first simulated fuel bed 34, as shown in Figs. 6 and 7,
preferably comprises a simulated grate 70 which is positioned above a
simulated
ember bed 72 and supports simulated fuel elements 74. However, various
arrangements can be used to achieve the desired effect. For example, in the
absence of the grate 70, the simulated ember bed 72 could support the
simulated
fuel elements 74 directly, as shown in Fig. 21. In Fig. 6, simulated fuel
element
74 is shown as being directly supported by the simulated grate 70 and the
simulated ember bed 72 is positioned below the simulated grate 70. (It will be
understood that the second simulated fuel bed 54 is not shown in Figs. 5 - 7
for
clarity of illustration.) As shown in Fig. 17, the second simulated fuel bed
54 also
includes a simulated grate 71, a simulated ember bed 73, and simulated fuel
elements 75, corresponding to similar elements in the first simulated fuel bed
34.
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CA 02455380 2004-01-19
Preferably, the simulated fuel elements 74, 75 are formp-d and colored to
simulate wood logs, however, the simulated fuel elements 74, 75 can be formed
and colored to simulate any desired fuel, as is known in the art. In the
preferred
embodiment, the simulated fuel elements 74, 75 are made of styrofoam and
formed and colored (i.e., painted) to simulate fuel which is burning and
partially
burned, as described in U.S. Patent No. 5,642,580.
[0070] Preferably, the simulated ember beds 72, 73 are vacuum-formed
plastic and painted and formed to simulated ember beds, as described in U.S.
Patent No. 5,642,580. The simulated ember beds 72, 73 preferably include
translucent parts colored orange or any suitable color through which light
from
the light source 36 can pass, to simulate burning embers in a real bed of
embers.
The light from the light source 36 passes through the aperture 64 to the
underside of the simulated ember beds 72, 73, as shown in Fig. 5. For example,
in Fig. 5, a path of light from the light source 36, reflected from the
flicker element
46 to an underside 77 of the simulated ember bed 72, is schematically
represented by the arrow "X".
[0071] Ember decals, disclosed in U.S. Patent No. 6,162,047, could be
included in the simulated fuel beds 34, 54 to enhance the flame simulation
effect.
[0072] In the preferred embodiment, and as shown in Figs. 1 and 3, the
screens 32, 38 each include a pattern 76 depicting a structure. Preferably,
the
structure depicted is a firebrick wall, such as that which may be seen in a
real
fireplace (i.e., a fireplace in which wood or coal is burned), thereby making
the
simulation of flames in the flame simulating assembly 30 more realistic. U.S.
patent application no. 09/968,796, filed on October 3, 2001, discloses screens
including such patterns. Where the screens 32, 38 include the pattern 76, side
wall panels 78 with a pattern 80 thereon each are preferably included in the
flame simulating assembly 30. The patterns 80 are foI-med, colored and
positioned on the side wall panels 78 to mate with the patterns 76 on the
screens
32, 38, to provide a more realistic simulation.
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[0073] The screens 32, 38 can be glass or plastic or any material suitable
for transmitting one or more images of flames 31 therethroUgh. However, the
screens 32, 38 are preferably glass, and the front surfaces 67 of either or
both of
screens 32, 38 can be partially silvered so that they are partially
reflective, as
disclosed in U.S. Patent No. 5,642,580. In addition, the back surfaces 69 of
the
screens 32, 38 can be adapted for diffusing light from the light source 36 and
transmitting such light through to the front surface 67, where the image of
flames
31 thereby created is observable by the viewer (not shown). Preferably, a
reflective region 82 of the front surface 67 which is adjacent to the
simulated fuel
bed 34, 54 is lightly silvered, so that the simulated fuel bed 34, 54 is
partially
reflected in the reflective region 82, giving the illusion of depth.
[0074] In addition, in the preferred embodiment, the simulated fuel
elements 74, 75 are formed so as to further provide the illusion of depth. For
example, as shown in Fig. 17, a first simulated log 85 (in first simulated
fuel
elements 74) and a second simulated log 86 (in second simulated fuel elements
75) have respective flat portions 87, 88 adapted to cooperate with the front
surfaces 67 so that the simulated fuel elements 74, 75 can be positioned in
the
preferred locations relative to the front surfaces 67. Preferably, the first
and
second simulated fuel beds 34, 54 (including simulated fuel elements 74, 75)
are
positioned relative to the reflective regions 82 in the front surfaces 67 so
that a
reflected image of the simulated fuel beds 34, 54 is created, and the images
of
flames 31 appear to emanate from the simulated fuel beds 34, 54 and the
reflected images of the simulated fuel beds 34, 54, and also from
therebetween.
[0075] As can be seen in Figs. 1 and 3, where the screen 32, 38 includes
the pattern 76, the pattern 76 preferably extends only partly into the
reflective
region 82. It has been found that the pattern 76 preferably should extend only
to
a limited extent into the reflective region 82 because the pattern 76
otherwise
tends to distract the viewer from the image of flames 31, so that the
simulation of
flames is then somewhat less effective overall.
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[0076] The back surface 69 can be treated in any suitable manner, such
as scoring, or covering the back surface 69 with a thin coating of transparent
ink,
to achieve the desired effect, i.e., diffusing light from the light source 36
to a
limited extent, while also transmitting light from the light source 36 to the
front
surface 67. (In the preferred embodiment, a diffusing membor 84 is provided,
as
described below). It is preferable that the back surface 69 portially diffuses
light
from the light source 36 because the back surface 69 serves the purpose of
impeding, to the greatest extent feasible, the viewer's ability to see through
the
screens 32, 38 to the flame effect element 52, the flicker elements 44, 46 or
the
light source 36.
[0077] Preferably, the back surface 69 is non-planar, so that the image of
flames 31 transmitted through the back surface 69 appears to the viewer to be
three-dimensional (Figs. 8, 9), as described in U.S. Patent No. 6,363,636 and
U.S. patent application no. 10/101,013, filed on March 20, 2002. In the
preferred
embodiment, the diffusing member 84 is created out of translucent frosted
plastic, which is non-planar. The diffusing member 84 can be used with either
or
both of screens 32, 38 to provide a three-dimensional image of flames 31
transmitted through the screens 32, 38. For example, as shoWn in Figs. 8 and
9,
the diffusing member 84 is positioned behind the first screen 32. It will be
understood that the second screen 38 and the second simulated fuel bed 54 are
not shown in Figs. 8 and 9 in order to simplify the drawings.
[0078] It will also be appreciated that, in the alternative embodiments, the
screens 32, 38 may have front surfaces 67 which are not reflective and may or
may not have back surfaces 69 which diffuse the light from the light source 36
as
it passes through the back surfaces 69.
[0079] Where a reflective region 82 is included on a front surface 67, a
non-reflective matte region 90 is preferably also included on the front
surface 67
(Fig. 19), positioned so that objects in the room which the front surface 67
faces
may not be reflected in the screen 32, 38. Using a matte region on a partially
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CA 02455380 2004-01-19
reflective surface is described in U.S. Patent No. 6,269,567. In practice, due
to
the typical positioning of the viewer's eyes relative to the screen 32, 38,
the non-
reflective matte region 90 is positioned distal from the simulated fuel bed
34, 54,
i.e., distal from the reflective region 82 of the front surface 67.
Preferably, a
transition region 92 (Fig. 19) is positioned between the non-reflective matte
region 90 and the reflective region 82. Because of the transition region 92,
the
transition between the reflective region 82 and the non-reflective region 90
is
gradual, thereby providing a more realistic overall flame simul~ltion effect.
[0080] As noted, the second simulated fuel bed 54 has not been shown in
Figs. 2 and 4 - 9 for clarity of illustration, but it will be understpod that
the second
simulated fuel bed 54 is included in the flame simulating assembly 30
generally
illustrated in those views. The preferred embodiment of the flame simulating
assembly 30 is shown in Figs. 20 and 21, including two simulated fuel beds 34,
54 in position.
[0081] The flame simulating assembly 30 also can include front reflectors
105 (Fig. 21) for reflecting light from the light source 36 onto the simulated
fuel
bed. Such front reflectors are described in U.S. Patents Nos. 6,564,485 and
6,615,519. The front reflectors 105 provide a more realistic simulation of hot
burning embers in the simulated fuel beds 34, 54. Preferably, and as described
in U.S. Patent No. 5,642,580, the simulated ember beds 72, 73 support the
simulated fuel elements 74, 75 directly. Light from the light source 36,
schematically represented by arrow "A", is directed to the underside 77 of the
simulated ember beds 72, 73, and is transmitted through translucent parts (not
shown) of the simulated ember beds 72, 73. Also, light from the light source
36,
after passing through the translucent parts (or transparent parts, or
apertures, as
the case may be), is reflected by the front reflectors 105 onto the simulate
fuel
beds 34, 54, as schematically represented by arrow "B". Frorlt reflectors in
flame
simulating assemblies are described in U.S. Patents Nos. 6,564,485 and 6,615,
519.
17
CA 02455380 2004-01-19
[0082] Additional embodiments of the invention are shQwn in Figs. 10 - 18
and 22 - 28. In Figs. 10 - 18 and 22 - 28, elements are humbered so as to
correspond to like elements shown in Figs. 1- 9 and 19 - 21.
[0083] An alternative embodiment is shown in Figs. 10 - 11, in which a
flame simulating assembly 130 includes a flame effect element 152 with
reflective portions 94 for configuring light from the light source 36 so that
one or
more images of flames 31 is created (Fig. 10). As can be seen in Fig. 11, in
the
flame simulating assembly 130, a first flicker element 144 is positioned in a
first
path of light 155 between the light source 36 and the first screen 32, and
below
the first simulated fuel bed 34. Light from the light source 36 is caused to
flicker,
or fluctuate, by the first flicker element 144, and reflected from the first
flicker
element 144 to a first side 96 of the flame effect element 152. Reflective
portions 94 are positioned on the first side 96. The fluctuating light is
further
reflected by the reflective portions 94 on the first side 96 to the back
surface 69
of the first screen 32, to provide one or more image of flames 31 transmitted
through the first screen 32. A first path of light 155 is schematically
represented
by arrows 97, 98, and 99 in Fig. 11.
[0084] It will be understood that the flame simulating assembly 130
preferably includes both simulated fuel beds 34, 54, and that the second
simulated fuel bed 54 is not shown in Figs. 10 and 11 for clarity in the
drawings.
Fig. 10 shows a second side 100 of the flame effect element 152, with
reflective
portions 94 thereon, and showing a second flicker element 146. Also, it will
be
understood that a second path of light (not shown) generally oorresponding to
the
first path of light 155 simultaneously results in one or more images of flames
transmitted through the second screen 38.
[0085] Another alternative embodiment is shown in Figs. 12 - 14, in which
a flame simulating assembly 230 can be seen which includes a flicker element
244 and a flame effect element 252. Although various types of flicker elements
could be used, the flicker element 244 is preferably a rotiss;erie type of
flicker
18
CA 02455380 2004-01-19
element. The flame effect element 252 includes apertures 268 (Figs. 13, 14)
for
configuring light from the light source 36 to provide one or more images of
flames
31, but the flame effect element 252 additionally includes one or more
reflective
portions 298 (Fig. 13) on a second side 200 of the flame effect element 252
which also configure light from the light source 36 to provide one or more
images
of flames 31. Preferably, and as shown in Fig. 14, a first side 296 of the
flame
effect element 252 does not include reflective portions, as such reflective
portions would be unnecessary.
[0086] As can be seen in Fig. 12, the flicker element 244, which is adapted
to create a flickering or fluctuating light, is positioned in a first path of
light 255
between the light source 36 and the first screen 32. Light from the light
source
36 is reflected by the flicker element 244, and the fluctuating light thus
reflected
(schematically represented by arrow 205) is transmitted through the apertures
268 and through the first screen 32 to produce one or more images of flames
31.
The first path of light 255 is schematically represented by arrows 204 and
255.
[0087] Fig. 12 also shows that the flicker element 244 is positioned in a
second path of light 257 between the light source 36 and the second screen 38.
Light from the light source 36 is reflected by the flicker element 244, and
the
fluctuating light thus reflected (schematically represented by arrow 202) is
reflected by the reflective portions 298 on the first side 200 of the flame
effect
element 252. The fluctuating light thus reflected from the reflective portions
298
(schematically represented by arrow 203) is transmitted through the second
screen 38 to produce one or more images of flames 31. The second path of light
257 is schematically represented by arrows 201, 202 and 203. Advantageously,
in this embodiment, the flame simulating assembly 230 includes only one
flicker
element. Instead of two motors to rotate two flicker elements, the flame
simulating assembly 230 includes only one motor for that purpose.
[0088] Another alternative embodiment, a flame simulating assembly 330,
is shown in Figs. 15 - 18. As shown in Figs. 15 and 16, the flame simulating
19
CA 02455380 2004-01-19
assembly 330 includes screens 332, 338, and each of the screens 332, 338
preferably has a front surface 367 with a reflective portion 382, a non-
reflective
portion 308, and a top region 310 adapted to permit substantially unobstructed
observation therethrough. A front view of the screen 338 is shown in Fig. 18.
[0089] The flame simulating assembly 330 is intended to simulate a real
two-sided fireplace (not shown). As can be seen in Fig. 16, a viewer 312
viewing
the second screen 338, is able to see through the flame simulating assembly
330, i.e., above the images of flames 31 transmitted through the second screen
338, into the next room (not shown), i.e., the room from which the first
screen
332 is observable. Arrow 313 in Fig. 16 schematically represents the line of
sight
of the viewer 312 through the top regions 310 in each of the screens 332 and
338. As shown in Fig. 16, the viewer 312 can see through the top region 310 of
the second screen 338 and also through the top region 310 of the first screen
332. The viewer 312 also can observe one or more images of flames 31
transmitted through the second screen 338 simultaneously. Similarly, another
viewer (not shown) facing the first screen 332 can see through the top regions
310 into the room in which the viewer 312 is located.
[0090] Preferably, a shield 317 is positioned betweeti the screens 332,
338 at a height just below the top regions 310, as can be seen in Fig. 16. The
shield 317 is intended to prevent possible distractions between screens 332
and
338 from entering the viewer's field of vision, by obstructing or blocking
such
distractions. Such distractions could be, for example, random flashes of light
from the light source 36 reflected generally upwardly by a flicker element.
Alternatively, the viewer may be distracted by the back surface 69 of the
screen
opposite to that viewed by the viewer, or images of flames transmitted through
such screen. (For example, if the viewer is viewing the first screen 332, then
in
the absence of the shield 317, the viewer may be able to observe - through the
top region 310 - the back surface 60 of the second screen 338, or images of
flames transmitted through the second screen 338.) These distractions would
.....__....... . ~~ r~~~,~. , ~.~r..w .. . .,...~-.,~~~ ,~~;v.~x.~.
_...._...._.~.,.-...,...t ~
CA 02455380 2004-01-19
detract from the overall effect of the flame simulation. The shield 317 is
preferably made of dark (preferably black) material, for example, a black (or
dark)
cloth placed on a frame (not shown) supported by the screen frames.
Alternatively, the shield 317 could be a piece of sheet metal or other
suitable
material painted flat black.
[0091] It will be appreciated that various arrangements could be used
which may provide satisfactory results, depending on the effects sought to be
simulated, and cost considerations. For example, the screens 332, 338 could
include regions on the front surfaces 67 positioned adjacent to the simulated
fuel
beds 34, 54 which are not necessarily reflective, or only partially
reflective.
Similarly, the screens 332, 338 could have only the reflective regions 382 and
the
top portions 310, i.e., the screens 332, 338 could be constructed without the
non-
reflective regions 308. Also, although the top portions 310 of the screens
332,
338 are preferably substantially transparent, they could be translucent.
Alternatively, the top regions 310 could have other features intended to
impede
(at least partially) the viewer's ability to see elements behind the front
surfaces 67
while permitting substantially unobstructed observation therethrough.
[0092] An alternative embodiment 333 of the first and second screens is
shown in Fig. 18. As can be seen in Fig. 18, the screen 333 is positioned
within
the flame simulating assembly housing 356. The housing 356 (including screen
frames (not shown in Fig. 18)) maintains the screens 333 in a substantially
upright position. (It will be understood that both the first and second
screens of
the alternative embodiment shown in Fig. 18 are indicated by the reference
numeral 333.) Each of the first and the second screens 333, however, includes
a
top edge 320 distal from the first simulated fuel bed 34 and the second
simulated
fuel bed 54 respectively. As can be seen in Fig. 18, the top edges 320 of the
screen 333 are spaced apart from top panels 343 of the housing 356 to define
an
upper opening 324 which is thereby formed through the flame simulating
assembly 330. Substantially unobstructed observation is thus permitted through
21
CA 02455380 2004-01-19
the upper opening 324 above the screens 333, from each side of the flame
simulating assembly 330 to the other. Because this is similar to the
substantially
unobstructed observation which may be enjoyed by a viewer of a real two-sided
fireplace over a wood or coal fire, the upper opening 324 tends to enhance the
overall simulation effect. A shield (not shown) similar to the shield 317, or
similar
means, is preferably included in the flame simulating assembly 330, positioned
to
enhance the overall simulation effect.
[0093] Another embodiment, being a flame simulating assembly 430, is
shown in Fig 22. This embodiment does not include simulated fuel beds. The
images of flames 31 are transmitted through the screens 432, 438. The images
of flames 31 result from light from the light source 36 which has been caused
to
fluctuate by the flicker elements 44, 46 and then configured into an image of
flames 31 by the flame effect element 52. The screens 432, 438 transmit one or
more images of flames 31, and the screens 432, 438 are formed and colored so
as to provide images which simulate flames. It will be appreciated that a user
(not shown) could, if desired, provide one or more simulated fuel beds to be
positioned in front of the screens 432, 438, to enhance the simulation effect.
For
example, real wooden logs (not shown) could be used as simulated fuel beds
and positioned in front of the screens 432, 438, thereby enhancing the
simulation
effect.
[0094] Yet another embodiment, being a flame simulating assembly 530,
is shown in Fig. 23. In this embodiment, the flame simulating assembly 530
includes screens 532, 538, a light source 36, and flicker elements 544, 546.
Preferably, the flame simulating assembly 530 does not include a flame effect
element. The images of flames 31 result from light from the light source 36
which has been caused to fluctuate by the flicker elements 44, 46, and which
is
reflected by the flicker elements 44, 46 to the first and second screens 532,
538.
[0095] In another embodiment, a flame simulating assembly 630 shown in
Figs. 24 and 25, a light source 636 is positioned inside a flicker element
614. In
22
CA 02455380 2004-01-19
the flame simulating assembly 630, the flicker element 614 is a "drum" type of
flicker element. In this type of flicker element, a cylindrical body 615
includes a
plurality of flame-shaped apertures 616. Preferably, the body 615 is adapted
to
rotate about the light source 636, which is positioned inside the body 615. It
is
preferred that the light source 636 is stationary, and the body 615 is rotated
by
an electric motor (not shown). Light from the light source 636 is configured
by
the apertures 616 to provide an image of flames which is transmitted to the
back
surfaces 69 of the screens 632, 638. Because the body 615 preferably rotates
about the light source 636, the images of flames 31 which are generated by the
flicker element 614 and the light source 636 fluctuate, to simulate flames.
[0096] The flicker element 615 preferably rotates in the direction shown by
arrow "Y" in Fig. 24. It can be seen in Fig. 24 that the images of flames 31
produced in the flame simulating assembly 630 which are trarismitted through
the
first screen 632 appear to travel generally upwardly. However, it will be
appreciated that the image of flames 31 transmitted through the second screen
638 appear to travel generally downward, which tends to detract from the
overall
realistic effect usually sought. In some circumstances, however, a realistic
flame
effect may not be intended, and the flame simulating assembly 630 may be used
in such applications.
[0097] In Fig. 23, the flame simulating assembly 630 is shown without
simulated fuel beds, as the flame simulating assembly 630 may be so
constructed. Preferably, however, the flame simulating assembly 630 includes
simulated fuel beds 34, 54, as shown in Fig. 25.
[0098] In another alternative embodiment 730 of a flame simulating
assembly of the invention, a flame effect element 752 is included. The flame
effect element 752 includes a body portion 753 which is at least partially
translucent. For example, the body portion 753 could comprise glass or
plastic,
or any suitable materials. The body portion 753 could be suitably tinted or
tinted
in any suitable manner to achieve any desired effects. As can be seen in Fig.
23
CA 02455380 2004-01-19
27A, the body portion 753 includes a first surface 749 facing a first screen
732
and a second surface 751 facing a second screen 738. Preferably, the first
surface 749 is at least partially reflective.
[0099] It is preferred that the flame effect element 752 additionally includes
a substantially non-reflective, or mask, portion 759 (Fig. 26). Preferably,
and as
shown in Fig. 26, the first surface 749 of the body portion 753 is
substantially
covered by the mask portion 759, which is preferably disposed on the first
surface 749, but does not cover the entire first surface 749. The mask portion
759 includes one or more apertures 761 for configuring light from the light
source
36 to form one or more image of flames 31. As can be seen in Fig. 26, one or
more apertures 761 defines one or more exposed parts 763 of the first surface
749. Because each aperture 761 is substantially flame-shaped, each exposed
part 763 is also flame-shaped.
[00100] As can be seen in Fig. 27A, the flicker element 44 is positioned in a
path of light between the iight source 36 and the flame effect element 752.
Light
from the light source 36 is reflected by the flicker element 44, such light
being
caused to flicker, or fluctuate, by the flicker element 44. The fluctuating
light thus
reflected (schematically represented by arrow 747) is partially reflected from
the
exposed parts 763, and partially transmitted through the exposed parts 763.
Light from the light source 36 which is reflected by the exposed parts 763 and
also light from the light source 36 which is transmitted through the exposed
parts
763 is configured by the by the apertures 761 to form one or more images of
flames 31. Accordingly, light reflected by the exposed parts 763
(schematically
represented by arrow 748) forms one or more images of flames 31 which are
transmitted through the first screen 732. Also, light transmitted through the
exposed parts 763 (schematically represented by arrow 750) also forms one or
more images of flames 31, which are transmitted through the second screen 738.
A first path of light 755 between the light source 36 and the first screen 732
is
represented by arrows 745, 747, and 748 (Fig. 27A). A second path of light 757
24
CA 02455380 2004-01-19
from the light source 36 to the second screen 738 is represented by arrows
745,
747, and 750.
[00101] In the preferred embodiment, the mask portion 759 is a layer of
substantially non-reflective black paint. Preferably, the mask portion 759 is
formed by painting flat black paint on the reflective side 749 of the body
portion
753, with the exposed parts 763 of the first surface 749 being protected from
the
paint by a stencil (not shown) forming flame-shaped parts.
[00102] In another alternative embodiment shown in Fig. 27B, a flame
simulating assembly 830 includes a first flicker element 844 and a second
flicker
element 846. The flame simulating assembly 830 also includes the flame effect
element 752. As can be seen in Fig. 27B, the first fiicker element 844 is
positioned in a primary path of light (schematically represented by arrows
845,
847) between the light source 36 and the flame effect element 752. Light from
the light source 36 is reflected by the first flicker element 844, and the
fluctuating
light thus reflected (schematically represented by arrow 847) is partially
reflected
from the exposed parts 763, and partially transmitted through the exposed
parts
763. Light from the light source 36 which is thus reflected by the exposed
parts
763 and light from the light source 36 which is thus transmitted through the
exposed parts 763 is configured by the apertures 761 to form one or more
images of flames 31. Accordingly, light reflected by the exposed parts 763
(schematically represented by arrow 848) forms one or more images of flames
31 which are transmitted through the first screen 832. Also, light transmitted
through the exposed parts 763 (schematically represented by arrow 850) forms
one or more images of flames 31 which are transmitted through the second
screen 838. A first path of light 855 between the light source 36 and the
first
screen 832 is schematically represented by arrows 845, 847, and 848. A second
path of light 857 between the light source 36 and the second screen 838 is
represented by arrows 845, 847, and 850.
CA 02455380 2004-01-19
[00103] In addition, the second flicker element 846 is positioned in a
secondary path of light (schematically represented by arrows 886, 887) between
the light source 36 and the flame effect element 752. Light from the light
source
36 is reflected by the second flicker element 846, and the fluctuating light
thus
reflected (schematically represented by arrow 887) is direi;ted to the second
surface 751 of the flame effect element 752. The fluctuating light
(schematically
represented by arrow 887) is partially transmitted through the exposed parts
763
and partially reflected by the exposed parts 763.
[00104] Light from the light source 36 which is thus transmitted through the
exposed parts 763 and light from the light source 36 which is thus reflected
from
the exposed parts 763 is, to an extent, configured by the apertures 761 to
form
one or more images of flames 31. Accordingly, light transmitted through the
exposed parts 763 (schematically represented by arrow 888) is transmitted
through the first screen 832, to produce images of flames 31. Light reflected
by
the exposed parts 763 (schematically represented by arrow 889) is also
transmitted through the second screen 838, to produce images of flames 31. A
third path of light 891 between the light source 36 and the first screen 832
is
schematically represented by arrows 886, 887, and 888. A fourth path of light
892 between the light source 36 and the second screen 838 is schematically
represented by arrows 886, 887, and 889.
[00105] However, it will be appreciated that light from the light source 36
which is transmitted along the secondary path of light to the second surface
751
is unlikely to provide relatively well-defined images of flames 31 for
transmission
through the second screen 838. This is because the second surface 751 is a
"back" side of a partially reflective "mirror" formed on the front side 749 of
the
body portion 753. Therefore, the images of flames 31 resulting from light from
the light source 36 being transmitted to the second surfaoe 751 of the body
portion 753 for transmission through the second screen 838 are only partially
formed by the apertures 761. Light from the light source 36 which is
transmitted
26
CA 02455380 2007-09-17
to the second surface 751 of the body portion 753 tends to be more generally
reflected. However, the images of flames 31 resulting from light from the
light
source 36 being transmitted to the second surface 751 and hence through the
apertures 761, for transmission through the first screen 832, are formed
thereby
into one or more relatively well-defined images of flames 31.
[00106] In order to provide better-defined images of flames 31 transmitted
through the second screen 838, another embodiment 852 of the flame effect
element is provided, as shown in Fig. 27C. The flame effect element 852
includes a second mask portion 879 including apertures 881. The second mask
portion 879 is positioned on a second surface 851 of a body portion 853 of the
flame effect element 852. The body portion 853 also includes the first surface
749 (Fig. 27D) disposed opposite to the second surface 851 (Fig. 27D).
Preferably, the first surface 749 is at least partially reflective, as in the
flame
effect element 752. The first surface 749 is preferably lightly "silvered", so
that
light is transmittable through the first surface 749 and also reflected from
the first
surface 749.
[00107] As in the flame effect element 752, the first mask portion 759 is
positioned on the first surface 749, which faces the first screen 832 (Fig.
27D).
Preferably, the second mask portion 879 is a layer of flat black paint,
similar to
the first mask portion 759. When the second mask portion 879 is created
(preferably by spraying suitable paint on the second surface 851), the
apertures
881 are preferably formed using a stencil identical to that used in forming
the
apertures 861. The apertures 881 define exposed parts 864 of the second
surface 851. The apertures 881 are aligned with apertures 861 in the first
mask
portion 859.
[00108] As can be seen in Fig. 27D, another alternative embodiment of a
flame simulating assembly 890 of the invention includes the flame effect
element
852, but is otherwise the same as the flame simulating assembly 830 shown in
Fig. 28B. The first flicker element 844 is positioned in a primary path of
light
27
CA 02455380 2004-01-19
(represented by arrows 845, 847) between the light source 36 and the flame
effect element 852. Light from the light source 36 is reflected by the first
flicker
element 844, and the fluctuating light thus reflected (schematically
represented
by arrow 847) is partially reflected from one or more exposed parts 763 of the
first surface 749, exposed by the apertures 761 (Fig. 27A), and partially
transmitted through the exposed parts 763. Light from the light source 36
which
is thus reflected from the exposed parts 763 and light from the light source
36
which is thus transmitted through the exposed parts 763 is configured by the
apertures 761 to form one or more images of flames 31.
[00109] Accordingly, light reflected by the exposed parts 763 (schematically
represented by arrow 848) forms one or more images of flames 31 which are
transmitted through the first screen 832. Also, light transmitted through the
exposed parts 763 (schematically represented by arrow 850) forms one or more
images of flames 31 which are transmitted through the second screen 838 (Fig.
27D).
[00110] In addition, the second flicker element 846 is positioned in a
secondary path of light (schematically represented by arrows 896, 897) between
the light source 36 and the flame effect element 852. Light from the light
source
36 is reflected by the second flicker element 846, and the fluctuating light
thus
reflected (schematically represented by arrow 897) is directed to the exposed
parts 864 of the second side 851 of the flame effect element 852. The
fluctuating
light (schematically represented by arrow 897) is transmitted through the
exposed parts 864 and partially transmitted through the exposed parts 763, and
also is partially reflected by the exposed parts 763.
[00111] Light from the light source 36 which is thus transmitted through the
exposed parts 763, and light from the light source 36 which is thus reflected
from
the exposed parts 763 is configured by the apertures 861 to form one or more
images of flames 31. Accordingly, light transmitted through the exposed parts
763 (schematically represented by arrow 898) is formed intb images of flames
28
CA 02455380 2004-01-19
which are transmitted through the first screen 832. Also, light reflected by
the
exposed parts 763 (schematically represented by arrow 899) is formed into
images of flames which are transmitted through the second screen 838.
[00112] It will be appreciated by those skilled in the art that the images of
flames 31 transmitted through the second screen 838 in the flame simulating
assembly 890 and resulting from the secondary path of light are shaped by the
apertures 881. Accordingly, the images of flames 31 resulting are better
defined
than those resulting from light transmitted along the secondary path of light
from
the light source 36 in flame simulating assembly 830.
[00113] The flicker elements 844, 846 are preferably moved by operatively
connected respective electric motors (not shown). Also, such electric motors
are
preferably separately controlled, to provide various flame images, of varying
intensity and flickering at varying speeds. Because images of flames 31 are
transmitted through both the first and the second screens 832, 838 which
result
from fluctuating light created by the first flicker element 844 and the second
flicker element 846, the potential exists for creation of some relatively
unusual
effects in the images of flames 31 provided by the flame simulating assembly
830.
[00114] In yet another alternative embodiment 930 of the flame simulating
assembly of the invention, a flame effect element 952 has a body portion 953
and an alternative non-reflective, or mask, portion 959 (Fig. 28A) positioned
on a
first surface 949. Preferably, the flame effect element 952 is positioned
between
a first screen 932 and a second screen 938 (Fig. 28B). The body portion 953 is
at least partially translucent, and includes the first surface 949 which
preferably is
at least partially reflective. The first surface 949 faces the first screen
932 and a
second surface 951 faces the second screen 938. The mask portion 959
preferably comprises a piece of sheet metal (or other suitable material)
including
one or more apertures 961 cut, stamped out of the piece, or formed in any
other
suitable manner. The sheet metal element 959 has an outside surface 907
29
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.,o, 'sa .,;m. hK., nK..Kh'n'~~* '-~~c'r.aFe.^,q.ovu.~rx.+~=.-,=, .-...,..=__.-
-_ _-.w.W......G.>.m ..m.,uman~caari=a~ax~cirro'n'.~awsms?~msa.^ccvmmaso
CA 02455380 2004-01-19
which preferably is colored black, with a substantialiy non-rdflective finish.
The
apertures 961 define one or more exposed parts 963 of the first surface 949.
Because each aperture 961 is substantially flame-shaped, each exposed part
963 is also substantially flame-shaped. The apertures 961 are shaped
specifically to configure the light to produce images of flames 31, as will be
described.
[00115] As can be seen in Fig. 28B, the first flicker element 944 is
positioned in a primary path of light (schematically represented by arrows
945,
947) between the light source 36 and the flame effect element 952. Light from
the light source 36 is reflected by the first flicker element 944, and the
fluctuating
light thus reflected (schematically represented by arrow 947) is partially
reflected
from the exposed parts 963, and partially transmitted through the exposed
parts
963. Light reflected by the exposed parts 963 (schematically represented by
arrow 948) is transmitted through the first screen 932 to produce one or more
images of flames 31. Light transmitted through the exposed parts 963
(schematically represented by arrow 950) is transmitted through the second
screen 938 to produce one or more images of flames 31. Light from the light
source 36 which is thus reflected by the exposed parts 963 and light from the
light source 36 which is thus transmitted through the exposed parts 963 is
configured by the apertures 961 to form one or more images of flames 31
transmitted through the screens 932, 938. A first path of light 955 between
the
light source 36 and the first screen 932 is schematically represented by
arrows
945, 947, and 948. A second path of light 957 between the light source 36 to
the
second screen 938 is represented by arrows 945, 947, and 950.
[00116] In addition, the second flicker element 946 is positioned in a
secondary path of light (schematically represented by arrows 986, 987) between
the light source 36 and the flame effect element 952. Light from the light
source
36 is reflected by the second flicker element 946, and the fluctuating light
thus
CA 02455380 2004-01-19
reflected (schematically represented by arrow 987) partially transmitted
through
the exposed parts 963, and partially reflected by the exposed parts 963.
[00117] Light from the light source 36 which is thus transmitted through the
exposed parts 963 and light from the light source 36 which is thus reflected
from
the exposed parts 963 is configured by the apertures 961 to form one or more
images of flames 31. Accordingly, light transmitted through the exposed parts
963 (schematically represented by arrow 988) is transmitted through the first
screen 932, to produce images of flames 31. Light reflected by the exposed
parts 963 (schematically represented by arrow 989) is also transmitted through
the second screen 938, to produce images of flames 31. A third path of light
992
between the light source 36 and the first screen 932 is schematically
represented
by arrows 986, 987, and 988. A fourth path of light 993 between the light
source
36 and the second screen 938, is schematically represented by arrows 986, 987,
and 989.
[00118] It will be appreciated that light from the light source 36 which is
transmitted along the secondary path of light to the second surface 951 (of
the
body portion 953) in the flame simulating assembly 930 is unlikely to provide
relatively well-defined images of flames 31 for transmission through the
second
screen 838. (This is also as described above in connection with the flame
simulating assembly 830.) This is because the second surface 951 is a "back"
side of a partially reflective "mirror" formed on the front side 949 of the
body
portion 953, as described. Therefore, the images of flames resulting from
light
from the light source 36 being transmitted to the second surface 951 of the
body
portion 953 for transmission through the second screen 938 are only partially
formed by the apertures 961. Light from the light source 36 which is
transmitted
along the secondary path to the second surface 951 of the body portion 953
tends to be more generally reflected.
[00119] The flicker elements 944, 946 are preferably moved by operatively
connected respective electric motors (not shown). Also, such electric motors
are
31
___ ___ .......~
CA 02455380 2004-01-19
preferably separately controlled, to provide various flame images, of varying
intensity and flickering at varying speeds. Because images of flames 31 are
transmitted through both the first and the second screens 932, 938 which
result
from fluctuating light created by the first flicker element 944 and the second
flicker element 946, the potential exists for creation of some relatively
unusual
effects in the images of flames provided by the flame simulating assembly 930.
[00120] In order to provide better-defined images of flames transmitted
through the second screen 938, another embodiment 972 of the flame effect
element is provided, as shown in Fig. 28C. The flame effect element 972
includes a second mask portion 979 including apertures 981. The second mask
portion 979 is positioned on a second surface 973 of a body portion 974 of the
flame effect element 972. The body portion 974 also includes the first surface
949 (Fig. 28D) disposed opposite to the second surface 973. Preferably, the
first
surface 949 is at least partially reflective, as in the flame effect element
952. The
first surface 949 is preferably lightly silvered, so that light is
transmittable through
the first surface 949 and also reflected from the first surface 949.
[00121] As in the flame effect element 952, the first mask portion 959 is
positioned on the first surface 949, which faces the first screen 932 (Fig.
28D).
Preferably, the second mask portion 979 is a sheet metal element, similar to
the
first mask portion 959. The second mask portion 979 includes apertures 981
which (when the first mask portion 959 and the second mask portion 979 are in
position on opposite sides of the body portion 974) are aligned with the
apertures
961 (Fig. 28A) in the first mask portion 959. The apertures 981 define exposed
parts 964 of the second surface 973. The apertures 981 are flame-shaped.
[00122] As can be seen in Fig. 28D, another alternative embodiment of a
flame simulating assembly 990 of the invention includes the flame effect
element
972, but is otherwise the same as the flame simulating assembly 930 shown in
Fig. 27B. The first flicker element 944 is positioned in a primary path of
light
(represented by arrows 945, 947) between the light source 36 and the flame
32
CA 02455380 2004-01-19
effect element 972. Light from the light source 36 is reflected by the first
flicker
element 944, and the fluctuating light thus reflected (schematically
represented
by arrow 947) is partially reflected from one or more exposed parts 963 of the
first surface 949, exposed by the apertures 961 (Fig. 28A), and partially
transmitted through the exposed parts 963. Light from the light source 36
which
is thus reflected from the exposed parts 963 and light from the light source
36
which is thus transmitted through the exposed parts 963 is configured by the
apertures 961 to form one or more images of flames 31.
[00123] Accordingly, light reflected by the exposed parts 963 (schematically
represented by arrow 948) forms one or more images of flames which are
transmitted through the first screen 932. Also, light transmitted through the
exposed parts 963 (schematically represented by arrow 950) forms one or more
images of flames which are transmitted through the second screen 938.
[00124] In addition, the second flicker element 946 is positioned in a
secondary path of light (schematically represented by arrows 996, 997) between
the light source 36 and the flame effect element 972. Light from the light
source
36 is reflected by the second flicker element 946, and the fluctuating light
thus
reflected (schematically represented by arrow 997) is directed to the exposed
parts 964 of the second side 973 of the flame effect element Q72. The
fluctuating
light (schematically represented by arrow 997) is transmitted through the
exposed parts 964 and partially transmitted through the exposed parts 963, and
also is partially reflected by the exposed parts 963.
[00125] Light from the light source 36 which is thus transmitted through the
exposed parts 963, and light from the light source 36 which is thus reflected
from
the exposed parts 963 is configured by the apertures 961 to form one or more
images of flames 31. Accordingly, light transmitted through the exposed parts
963 (schematically represented by arrow 998) is formed into images of flames
which are transmitted through the first screen 932. Also, light reflected by
the
33
_ . __ . _ _.._ ...: .._
CA 02455380 2004-01-19
exposed parts 963 (schematically represented by arrow 999) is formed into
images of flames which are transmitted through the second screen 938.
[00126] It will be appreciated by those skilled in the art that the images of
flames 31 transmitted through the second screen 938 in the flame simulating
assembly 990 and resulting from the secondary path of light are configured by
the apertures 981. Accordingly, the images of flames resulting are better
defined
than those resulting from light transmitted along the secondary path of light
from
the light source 36 in flame simulating assembly 930 (Fig. 276).
[00127] Another embodiment 1052 of the flame effect element is provided,
as shown in Figs. 29A and 29B. The flame effect element 1052 includes a body
portion 1053 (Fig. 30A) with a first surface 1049 and a second surface 1051,
the
surfaces 1049, 1051 facing the first screen 1032 and the second screen 1038
respectively, as will be described (Fig. 30A). Preferably, the body portion
1053 is
transparent or translucent glass or plastic or any other suitable material. As
can
be seen in Figs. 29A and 29B, the flame effect element 1052 preferably
includes
a flame configuration portion 1050 comprising a plurality of semi-silvered,
flame-
shaped areas positioned on the first surface 1049. The flame effect element
1052 also includes a first mask portion 1059 having apertures 1061 configured
to
conform to the flame configuration portion 1050. As can be seen in Fig. 29A,
the
flame configuration portion 1050 includes a number of flame-shaped exposed
parts 1063 of the first surface 1049. Preferably, the first mask portion 1059
is a
layer of flat black paint or any other suitable material.
[00128] As can be seen in Fig. 29B, the exposed parts 1063 of the flame
configuration portion 1050 are viewable through the second surface 1051.
Preferably, the flame configuration portion 1050 is semi-silvered on both of
its
sides, i.e., on the side thereof which is in contact with the first surface
1049, and
also on the side thereof which is opposite thereto. Accordingly, the exposed
parts 1063 are reflective on both sides thereof.
34
CA 02455380 2004-01-19
[00129] The flame-shaped configuration portion 1050 could be cut out of
silvered film. Alternatively, the flame-shaped configuration portion 1050
could be
sprayed onto the front surface 1049, shaped using a stencil (not shown).
[00130] As shown in Fig. 30A, another alternative embodiment of a flame
simulating assembly 1030 includes the flame effect element 1052. A first
flicker
element 1044 is positioned in a primary path of light (represented by arrows
1045, 1047) between the light source 36 and the flame effect element 1052.
Light from the light source 36 is reflected by the first flicker element 1044,
and
the fluctuating light thus reflected (schematically represented by arrow 1047)
is
partially reflected from one or more parts 1063 of the flame configuration
portion
1050, and partially transmitted through the parts 1063. Light from the light
source 36 which is thus reflected from the parts 1063 and light from the light
source 36 which is thus transmitted through the parts 1063 is configured by
the
apertures 1061 to form one or more images of flames 31.
[00131] Accordingly, light reflected by the parts 1063 (schematically
represented by arrow 1048) forms one or more images of flames 31 which are
transmitted through the first screen 1032. Also, light transmitted through the
parts 1063 (schematically represented by arrow 1040) forms one or more images
of flames 31 which are transmitted through the second screen 1038.
[00132] As can be seen in Fig. 30B, another alternative embodiment of a
flame simulating assembly 1130 includes the flame effect element 1052, a first
flicker element 1144, and a second flicker element 1146. The first flicker
element
1144 is positioned in a primary path of light (schematically represented by
arrows
1145, 1147) between the light source 36 and the flame effect element 1052
(Fig.
30B). Light from the light source 36 is reflected by the first flicker element
1144,
and the fluctuating light thus reflected (schematically represented by arrow
1147)
is partially reflected from the exposed parts 1063, and partially transmitted
through the exposed parts 1063. Light from the light source 36 which is thus
reflected by the exposed parts 1063 and light from the light source 36 which
is
CA 02455380 2004-01-19
thus transmitted through the exposed parts 1063 is configured by the apertures
1061 to form one or more images of flames 31. Accordingly, light reflected by
the exposed parts 1063 (schematically represented by arrow 1148) forms one or
more images of flames 31 which are transmitted through the first screen 1132.
Also, light transmitted through the exposed parts 1063 (schematically
represented by arrow 1150) forms one or more images of flames 31 which are
transmitted through the second screen 1138. A first path of light 1155 between
the light source 36 and the first screen 1132 is schematically represented by
arrows 1145, 1147, and 1148. A second path of light 1157 between the light
source 36 and the second screen 1138 is represented by arrows 1145, 1147,
and 1150.
[00133] In addition, the second flicker element 1146 is positioned in a
secondary path of light (schematically represented by arrows 1186, 1187)
between the light source 36 and the flame effect element 1052. Light from the
light source 36 is reflected by the second flicker element 1146, and the
fluctuating light thus reflected (schematically represented by arrow 1187) is
directed to the second surface 1051 of the flame effect element 1052. The
fluctuating light (schematically represented by arrow 1187) is partially
transmitted
through the exposed parts 1063 and partially reflected by the exposed parts
1063.
[00134] Light from the light source 36 which is thus transmitted through the
exposed parts 1063 is configured by the apertures 1061 to form one or more
images of flames 31. Light from the light source 36 which is thus reflected
from
the exposed parts 1063 is configured by the parts 1063 viewable through the
second surface 1051 of the body portion 1053. The images of flames resulting
are well-defined because the parts 1063 are flame-shaped.
[00135] Accordingly, light transmitted through the parts 1063 (schematically
represented by arrow 1188) is transmitted through the first screen 1132, to
produce images of flames 31. Light reflected by the parts 1063 (schematically
36
CA 02455380 2004-01-19
represented by arrow 1189) is also transmitted through the second screen 1138,
to produce images of flames 31.
[00136] In another alternative embodiment, a flame effect element 1252
includes a first mask portion 1259 which is preferably made of sheet metal
(Fig.
30C). The mask portion 1259 could alternatively be made of plastic or any
other
suitable material. The mask portion 1259 includes one or more apertures 1261
cut, stamped out of the piece, or formed in any other suitable manner. Also,
the
sheet metal mask element 1259 has an outside surface 1207 which is preferably
colored black, with a substantially non-reflective finish. The flame element
1252
also includes a body portion 1253, with a first surface 1249 and a second
surface
1251. The apertures 1261 define one or more exposed parts 1263 of the first
surface 1249 of the body portion 1253. Because each aperture 1261 is
substantially flame-shaped, each exposed part 1263 is also substantially flame-
shaped.
[00137] As can be seen in Fig. 30C, another alternative embodiment of a
flame simulating assembly 1230 includes the flame effect element 1252, a first
flicker element 1244, and a second flicker element 1246. The first flicker
element
1244 is positioned in a primary path of light (schematically represented by
arrows
1245, 1247) between the light source 36 and the flame effect element 1252.
Light from the light source 36 is reflected by the first flicker element 1244,
and
the fluctuating light thus reflected (schematically represented by arrow 1247)
is
partially reflected from the exposed parts 1263, and partially transmitted
through
exposed parts 1263. Light from the light source 36 which is thus reflected by
the
exposed parts 1263 and light from the light source 36 which is thus
transmitted
through the exposed parts 1263 is configured by the apertures 1261 to form one
or more images of flames 31. Accordingly, light reflected by the exposed parts
1263 (schematically represented by arrow 1248) forms one or more images of
flames 31 which are transmitted through the first screen 1232. Also, light
transmitted through the exposed parts 1263 (schematically represented by arrow
37
m ._~.~. ..m.. ~,...~ _.....-_,_.__.
.._._.__ _,.w_õ.~, ~ . ~... .. .....~yK ~.~
CA 02455380 2004-01-19
1250) forms one or more images of flames 31 which are transmitted through the
second screen 1238.
[00138] In addition, the second flicker element is positioned in a secondary
path of light (schematically represented by arrows 1286, 1287) between the
light
source 36 and the flame effect element 1252. Light from the light source 36 is
reflected by the second flicker element 1246, and the fluctuating light thus
reflected (schematically represented by arrow 1287) is directed to the second
surface 1251 of the flame effect element 1252. The fluctuating light
(schematically represented by arrow 1287) is partially transmitted through the
exposed parts 1263 and partially reflected by the exposed parts 1263.
[00139] Light from the light source 36 which is thus transmitted through the
exposed parts 1263 is configured by the apertures 1261 to form one or more
images of flames 31. Light from the light source 36 which is thus reflected
from
the exposed parts 1263 is configured by the parts 1263 viewable through the
second surface 1251 of the body portion 1253. The images of flames resulting
are well-defined because the parts 1263 are flame-shaped.
[00140] Accordingly, light transmitted through the exposed parts 1263
(schematically represented by arrow 1288) is transmitted through the first
screen
1232, to produce images of flames 31. Light reflected by the exposed parts
1263
(schematically represented by arrow 1289) is also transmitted through the
second screen 1238, to produce images of flames 31.
[00141] It will be evident to those skilled in the art theit the invention can
take many forms, and that such forms are within the scope of the invention as
claimed. Therefore, the spirit and scope of the appended claims should not be
limited to the description of the preferred versions contained herein.
38
