Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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ROLAND SANTA ANA
DESCRIPTION OF THE INVENTION
TITLE: COMBINATION TABLE -MITER SAW & ASSEMBLY
TECHNICAL FIELD
This invention relates in general assemblies for saws, in particular to
assemblies for
table saws and miter saws. This invention is a novel combination table-miter
saw and
assembly with the ability to adjust the orientation of the saw unit in
different angles, thus
permitting the use of the tool as a table saw or as a miter saw at user's
preference and in a
short period of time.
BACKGROUND ART
The prior art has diverse examples of saws and saw assemblies, all achieving
distinct purposes. Nevertheless, none of the inventions present in the prior
art disclose the
improvement subj ect of this application, a combination table-miter saw and
assembly with
the novel characteristic of allowing the adjustment of the orientation of the
saw for cutting a
workpiece at different angles, therefore being able to adjust the tool into a
table saw or into
a miter saw.
US Patent No. 5,868,185 (Poling et al, 1999) describes a folding workbench
system.
The invention in the prior art is different to the combination table-miter saw
and assembly
because the first is a folding workbench system that does not resemble the
assembly of the
combination table-miter saw and assembly. The prior art invention does not
have a work
table with a radial shaped side such as the miter saw platform (1b) of the
combination table-
miter saw and assembly. In addition, this prior art invention does not include
the safety
mechanism or the adjustable foot bases of the combination table-miter saw and
assembly.
US Patent No. No. 5,865,079 (Itzov, 1999) claims an adjustable workpiece
support
apparatus for a compound miter saw. This invention is different from the
combination
table-miter saw and assembly because it only refers to a miter saw, while the
invention
subject of this application refers to a tool and assembly that can be used as
a table saw or as
a miter saw at user's preference. Moreover, the prior art invention does not
include two
platforms such as the table saw platform (la) and the radial shaped miter saw
platform (1b),
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nor the safety mechanism or adjustable foot bases of the coybination table-
miter saw and
assembly.
US Patent No. 5,842,400 (McIntosh, 1998) describes a table saw assembly with
elements that are different from the elements of the combination table-miter
saw and
assembly. Although the invention in the prior art may do both straight and
angled cuts, the
combination table-miter saw and assembly has different elements such as the
table saw
platform (1 a) and miter saw platform (lb), and is therefore aesthetically
very different from
the prior art invention. Moreover, the prior art invention does not have the
safety
mechanism nor the adjustable foot pads of the combination table-miter saw and
assembly.
In addition, the combination table-miter saw and assembly may be smaller and
therefore
occupy less space, thus giving greater advantage to user.
US Patent No. 5,437,319 (Garuglieri, 1995) is for a pivoting power tool with a
table.
The combination table-miter saw and assembly differs from the invention in the
prior art
because it has different elements, such as the table saw platform (la) and
miter saw
platform (lb), and is therefore aesthetically very different from the prior
art invention.
US Patent No. 5,331,875 (Mayfield, 1994) and US Patent No. 5,063,806
(hayfield,
1991) are for an anti-kick forward device for radial arm saws. This
combination table-miter
saw and assembly invention differs from the inventions in the prior art
because it has novel
elements, such as the table saw platform (1a) and miter saw platform (1b), and
is therefore
aesthetically very different from the prior art inventions. In addition, the
combination table-
miter saw and assembly may be smaller and therefore easier to store and to
transport from
one place to another.
US Patent No. 5,353,670 (Metzger, Jr., 1994) is for independently and jointly
operable radial saw guards; US Patent No. 5,287,780 (Metzger, Jr. et al, 1994)
describes a
radial arm saw guard with operational interlock; and US Patent No. 5,287,779
(Metzger, Jr.,
1994) claims radial safety guards and barriers. These inventions differ from
the
combination table-miter saw and assembly because the latter is for a tool or
saw to be used
either as a table saw or a miter saw in a single assembly, and it has novel
elements such as
the table saw platform (la) and miter saw platform (lb). In addition, the
combination table-
miter saw and assembly is aesthetically very different from the prior art
inventions for the
first has adjustable and removable non-slip foot bases (9) while the prior art
inventions have
long legs to support their tables.
US Patent No. 5,179,886 (Rathje, Jr., 1993) is for a radial beam arm saw
table. This
invention is different to the combination table-miter saw and assembly because
the
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invention in the prior art has different elements than the combination table-
miter saw and
assembly. The combination table-miter saw and assembly has a characteristic
table saw
platform (la) and miter saw platform (lb). In addition, the combination table-
miter saw
and assembly is aesthetically very different from the prior art invention for
the first has non-
slip foot bases (9) while the prior art invention has long legs to support its
table.
Furthermore, since the prior art invention has a table with long legs, it
needs more stability,
hence the use of the water tank, which gives stability or rigidity to the
stand. This problem
is not encountered by the combination table-miter saw and assembly, Which has
a smaller
platform and foot bases, therefore having no stability nor rigidity issues,
therefore being
more practical for user. Moreover, the combination table-miter saw and
assembly may be
easily transported to any place chosen by user without the need to use water,
which further
differentiates it from the invention in the prior art.
US Patent No. 4,553,462 (Silken, 1985) claims a radial arm saw; US Patent No.
4,489,633 (van de Wouw, 1984) claims a sawing device and associated clamp and
safety
cap; US Patent No. 4,184,395 (Blachy et al, 1980) describes a radial arm saw;
and US
Patent No. 3,664, 389 (Bower, 1972) makes reference to a lateral adjustment
means for
radial arm saws. The inventions in the prior art are aesthetically different
to the
combination table-miter saw and assembly because they do not have the novel
table saw
platform (la) nor the miter saw platform (lb) as the workplace where the work
piece will
be cut.
US Patent No. 2,989,094 (Panavas, 1961) is fox adjustable stops and guide bar
for
power tool; US Patent No. 2,628,643 (Tompkins, 1953) is for a wood sawing
machine; and
US Patent No. 2,590,093 (Fuerr, Jr., 1952) is for a hand-operated motor-driven
radial
machine tool. These inventions differ from the combination table-miter saw and
assembly
because their elements are different. In addition, the combination table-miter
saw and
assembly may be portable and therefore giving greater advantages to user.
DISCLOSURE OF THE INVENTION
The present invention embodies a novel combination table-miter saw and
assembly
that allows the orientation of the saw to be adjusted at the worktable
assembly and therefore
may be used to perform multiple taslcs with the same saw unit which may be
used as a miter
saw or as a table saw at user's preference. The elements of this invention are
comprised of:
(a) A power tool or saw including a main saw unit (18), a saw blade (20), a
handle
grip with a motor switch control assembly (19), a motor (21), and a saw unit
slide bar (16).
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(b) A safety mechanism for the power tool or saw, comprising a locking knob
assembly (11) for the slide bax (16) on the ann support (3), a stay-down blade
lock knob
(12), and a switch control for table saw (13).
(c) An ann support (3) attached to the rotatable work table and that connects
the saw
unit (18) to a side of the worktable, including a knob handle tilt control
(10) and an angle
tilt scale (15).
(d) The rotatable work table comprised of a table saw platform (la) and a
miter saw
platform (lb) that has a radial shape, having the table saw platform (la) a
platform table
insert (22), a rail guide slot ramp (7), a scale marking (8), and a locking
handle assembly
(17).
(e) An undercarriage secured to the worktable and that allows the platforms to
rotate, also including a miter saw fixed fence base (14) and four adjustable
non-slip foot
bases (9) attached to each corner of the undercarriage.
(f) A stationary but removable fence (2), including a rail guide clamp handle
(5), rail
guide bar (6) and two clamp bolt knobs (4).
The combination table-miter saw and assembly can be operated as a table saw or
as
a miter saw. In case of a miter saw, the preferred embodiment may also be
operated as a
sliding miter saw. Some of the above elements will be relevant when used as a
table saw,
and others when used as a miter saw, as explained below.
For using the tool as a miter saw, user can put the work piece across the
platform
and against the fence (2) that has been placed on the miter saw fixed fence
base (14). In
addition, user may determine the cutting angle by rotating the worktable with
the locking
handle assembly (17).
The worktable may rotate but is secured to an undercarriage including a fixed
fence
base (14) and four adjustable and removable non-slip foot bases (9) attached
to each corner
of the undercarriage. In addition, the arm support (3) has a knob handle tilt
control (10) that
may be tightened to adjust the saw blade (20) to a desired angle that shall be
indicated on
the angle tilt scale (15). These elements (10 and 15) may be used for
performing compound
angled cuts.
The saw unit slide bar (16) permits the saw unit (18) to slide, therefore
being able to
be used not only as a fixed miter saw, but also as a sliding miter saw, thus
being able to cut
from front to back of the work table and vice versa, and cutting as wide as 12
inches or
greater. The desired angle for cutting is indicated by the scale at the miter
saw platform
(lb). With respect to the saw itself, user can operate it in miter saw mode by
pressing the
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handle grip with motor switch control assembly (19) with his or her hand.
Thereafter the
motor (21) will be turned on, and the saw blade (20) will be ready for
cutting. Therefore,
for safety reasons, it is recommended that user place the work piece to be cut
on the
worktable or miter saw platform (lb), adjust the angle, and thereafter begin
cutting it with
the saw. The arm support (3) which connects the saw unit (18) to a side of the
work table
shall be shaped in a manner that allows the work piece to have clearance to
pass through.
This arm support (3) may be shaped as a "C."
In addition, the fence (2) secures the work piece in place for cutting. The
platform
table insert (22) protects the saw blade (20) in case the saw unit (18) was
carelessly handled
by user and the saw blade (20) was misaligned.
To be operated under table saw mode, user must remove the fence (2) from its
position, place the rail guide bar (6) inside the rail guide slot ramp (7) at
the table saw
platform (la), and secure it by clamp or bolt knobs (4) to the side of the
table saw platform
(la). The fence (2) may be used as a rail guide for the table saw conversion.
The scale
marking (8) in inches or centimeters serves as a guide to adjust the fence (2)
to the desired
width for cutting. The work piece must then be placed on the table saw
platform (la) and
the saw blade (20) will cut it on top of the platform table insert (22). The
work piece may
also be cut in an angle for the saw blade (20) may be adjusted to an angle by
the knob
handle tilt control (10) on the arm support (3).
To operate the saw under table saw mode, user must first tighten the slide
bar's
locking knob assembly (11) to secure the saw unit (18) into a set position to
avoid
accidents; thereafter lock the stay down blade lock knob (12) which secures
the saw blade
(20) into a downward position, and finally pushing the safety switch control
(13) to lock the
saw unit (18) into place. Unless these three elements of the safety mechanism
(locl~ing
knob assembly (11), stay down lock knob (12), and safety switch control (13))
are locked or
activated, user may not operate the tool as a table saw.
User may determine the angle of the cut in table saw mode by operating the
knob
handle tilt control (10) that can be tightened to adjust the saw blade (20) to
the desired angle
which will be indicated on the angle tilt scale (15). In addition, user may
determine the
length of the cut with the scale marking (8) at table saw platform (la).
OBJECTS AND ADVANTAGES OF THE INVENTION
The present invention constitutes a significant improvement in several aspects
of
previously identified efforts of the prior art as described below.
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An object of the present invention is to provide a convenient work tool
assembly
that permits user to adjust the orientation of the tool in order to perform
multiple tasks with
the same work tool, being able to use this work tool as a miter saw or as a
table saw.
Therefore, user may perform several types of tasks with this novel invention,
such as but
not limited to cutting work pieces as a table saw e.g. cutting in a straight
line or 90 degree
angle, cross cutting, extended cross cutting, rip cutting, rip bevel cutting.
When user
accommodates the saw to be used as a miter saw, the tool will be able to do
cuts such as but
not limited to angle cutting, miter cutting, extended miter cutting, and
compound angle
cutting.
Another advantage of the present invention is that the combination table-miter
saw
and assembly will allow user to accommodate and cut work pieces of different
thickness
and diameter, being such work pieces such as but not limited to metal, wood,
plywood,
rubber or plastic.
Yet another object and advantage of this combination table-miter saw and
assembly
is to provide a tool that can easily be converted from a table saw to a miter
saw or vice
versa in a short period of time. The fact that one tool can have both uses of
a table saw or a
miter saw in one same equipment allows user to reduce space at his or her
workplace for the
invention provides less cumbersome tools for a tight workplace environment.
A further advantage of this combination table-miter saw and assembly is that
since it
can be used as a table saw or as a miter saw, user may have both uses in one
single
machine. Therefore, if user has to work in a construction site where he or she
would have
needed to transport both tools, he or she may save time in transporting this
invention.
Yet another advantage of this combination table-miter saw and assembly is that
it is
very economical, for it provides two traditional tools in one, having a table
saw and miter
saw in one same assembly. Moreover, one embodiment of this invention may also
permit
the saw to slide, therefore also having a sliding miter saw with the same
tool.
A further advantage of the present invention is that it is compatible to be
used with
various blades of different manufacturers, which makes it an invention
flexible for the
market.
Another advantage of the combination table-miter saw and assembly is that it
has
four adjustable and removable non-slip foot bases (9). The benefit conferred
by these foot
bases is that they may be adjustable in case the surface where the combination
table-miter
saw and assembly is placed were to be uneven and they prevent the invention
from rocking,
slipping or sliding on a surface.
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Another object of the combination table-miter saw and assembly is to provide a
tool
whose arm support (3) permits a work piece to pass through without an
obstruction in the
middle, therefore permitting user to do ripping, bevel cuts or angled cuts
with the saw.
Another object and advantage of the combination table-miter saw and assembly
is
that it provides effective safety features for user. The table saw may only be
activated by
first tightening the locking knob assembly (11) securing the saw unit slide
bar (16) into
place. Thus, the saw unit (18) will not be able to slide forward towards user,
hz addition,
user must lock the stay down lock knob (12) which brings the saw blade (20)
down into the
platform table insert (22) and secures it in place. Finally, user must
activate the safety
switch control (13) in order to operate the table saw. Unless these three
elements of the
safety mechanism (locking knob assembly (11), stay dome lock knob (12), and
safety
switch control (13)) are locked or activated, user may not operate the tool as
a table saw.
Therefore, user is protected from the saw unit (18) sliding towards him or her
and from the
saw blade (20) getting out of place by the security features mentioned herein
above. Thus,
this combination table-miter saw and assembly has efficient means of
protecting user from
accidents.
A further advantage of this invention is that it includes a stationary but
removable
fence (2) that may be used as a support for the miter saw and as a rail guide
for the table
saw conversion, therefore reducing the amount of parts needed to operate the
invention in
both saw modes.
Finally, another advantage of the combination table-miter saw is that a work
piece
may enter or start in the front or in the back of the table saw platform (la),
at user's
preference and depending on the use of the saw blade (20). This is an
advantage because
by being able to start the work piece behind the saw unit (18), user prevents
kickback and
j amming (the lattex being able to ruin the motor) from any big teeth blade,
and therefore
prevents accidents.
BRIEF DESCRIPTION OF DRAWINGS
The present application includes several drawings that illustrate an
embodiment of
the invention. However, the scope of the combination table-miter saw &
assembly is
limited only by the scope of the claims, and not by a particular embodiment
shown in the
drawings.
FIG.1 is a side view of an embodiment of the combination table-miter saw and
assembly adjusted to its miter saw mode, being this a sliding miter saw. The
figure
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illustrates the rotatable worktable assembly comprised of the table saw
platform (1 a), the
platform table insert (22), the locking handle assembly (17), the miter saw
platform (lb),
the adjustable non-slip foot base (9), the miter saw fixed fence base (14),
the stationary but
removable fence (2), the clamp bolt knob (4) that secures the fence (2) to the
miter saw
fixed fence base (14), the rail guide lot ramp (7) which is used to guide the
fence (2), the
saw trait (18), the saw blade (20), the handle grip with motor switch control
assembly (19)
for initializing the tool into its miter saw mode, the motor (21), the saw
unit slide bar (16)
for sliding the miter saw, and the arm support (3) that enables the saw unit
(18) to be moved
in angles for cutting the work pieces.
FIG. 2. is a side elevation view of the worktable and of the fence (2), both
to be used
for the table saw mode. It includes the table saw platform (1a), rail guide
slot ramp (7),
platform table insert (22) where the saw blade shall cut the work piece, a
locking handle
assembly (17), a scale marking (8), and the miter saw platform (lb). The
locking handle
assembly (17) is only for the miter saw mode, and it is a handle to move or
rotate the
worktable to a desired angle. In addition, this figure illustrates the fence
(2), including the
rail guide clamp handle (5), the rail guide bar (6) which is meant to be
inserted into the rail
guide slot ramp (7), and clamp bolt knobs (4).
FIG. 3. is a side view of the worktable to be used for the table saw,
including the
table saw platform (la), the rail guide clamp handle (5), clamp bolt knob (4),
arm support
(3), miter saw platform (lb), miter saw Fxed fence base (14), adjustable non-
slip foot base
(9), platform table insert (22), and locking handle assembly (17).
FIG. 4 is a side view of the combination table-miter saw and assembly ready to
be
used as a table saw. It includes the main saw unit (18), the saw unit slide
bar (16) for
sliding the saw unit (18) using the miter saw mode but not to be used in the
table saw mode,
the motor (21), the slide bar locking knob assembly (11) which must be
tightened for
operation of the table saw, the safety switch control (13), the handle grip
with motor switch
control assembly (19), the stay down lock knob (12) for securing the saw blade
(20) in
place, the saw blade (20), the locking handle assembly (17) which is used for
the miter saw,
the fence (2), the clamp bolt knob (4) which secures the fence (2), the miter
saw fixed fence
base (14), the table saw platform (la), the arm support (3), the knob handle
tilt control (10)
and the angle tile scale (15) for bevel cutting.
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DESCRIPTION OF PREFERRED EMBODIMENT/ BEST MODE
Having described the invention and its modes of operation in the paragraphs
hereinabove, following is the description of the preferred embodiment. The
elements of the
preferred embodiment of this combination table-miter saw & assembly invention
are
comprised of:
(a) A power tool or saw including a main saw unit (18), a saw blade (20), a
handle
grip with a motor switch control assembly (19), a motor (21), and a saw unit
slide bar (16).
(b) A safety mechanism for the power tool or saw, comprising a locking knob
assembly (11) for securing the slide bar (16) on the arm support (3) and
therefore secure the
saw unit (18) in place, a stay-down blade lock knob (12) to secure the blade
(20) to a
downward position, and a switch control for table saw (13).
(c) An ann support (3) shaped as a "C," attached to the rotatable worktable
and that
connects the saw unit (18) to a side of the worktable, including a knob handle
tilt control
(10) that when loosened may determine the angle of the saw blade (20) and an
angle tilt
scale (15) that will indicate the chosen angle.
(d) The rotatable work table comprised of a table saw platform (la) and a
miter saw
platform (lb) that has a radial shape, having the table saw platform (la) a
platform table
insert (22) where the saw blade (20) will perform its cutting, a rail guide
slot ramp (7) for
placing the fence (2) when the invention is used as a table saw, a scale
marking (8) in
inches or centimeters to guide the fence (2), and a locking handle assembly
(17) to turn the
platform to a desired angle.
(e) An undercarriage secured to the worktable and that allows the platforms to
rotate, including a miter saw fixed fence base (14) for placing the fence (2)
for operation of
the invention under miter saw mode, and four adjustable and removable non-slip
foot bases
(9) attached to each corner of the undercarnage.
(f) A stationary but removable fence (2), including a rail guide clamp handle
(5) to
be inserted with the rail guide bar (6) into the rail guide slot ramp (7) for
securing the fence
(2) to the worktable for table saw operation, and two clamp bolt knobs (4)
that secure the
fence (2) to the worktable.
The preferred embodiment of the invention shall be made of metal, except for
the
non slip foot base (9) that shall be made of rubber and the platform table
insert (22) that
shall be made of plastic.
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With respect to the best mode and operation of the invention, tlae combination
table-
miter saw and assembly may be operated as a table saw or as a sliding or fixed
miter saw.
For using the tool as a miter saw, user can put the work piece across the
platform
and against the fence (2) that has been placed on the miter saw fixed fence
base (14). In
addition, user may determine the cutting angle by rotating the worktable with
the locking
handle assembly (17).
The worktable may rotate but is secured to an undercarriage including a fixed
fence
base (14) and four adjustable and removable non-slip foot bases (9) attached
to each corner
of the undercarriage. In addition, the arm support (3) has a knob handle tilt
control (10) that
may be tightened to adjust the saw blade (20) to a desired angle that shall be
indicated on
the angle tilt scale (15). These elements (10 and 15) may be used for
performing compound
angled cuts.
The saw unit slide bar (16) permits the saw unit (18) to slide, therefore
being able to
be used not only as a fixed miter saw, but also as a sliding miter saw, thus
being able to cut
from front to back of the work table and vice versa, and cutting as wide as 12
inches or
greater. The desired angle for cutting is indicated by the scale at the miter
saw platform
(lb). With respect to the saw itself, user can operate it in miter saw mode by
pressing the
handle grip with motor switch control assembly (19) with his or her hand.
Thereafter the
motor (21) will be turned on, and the saw blade (20) will be ready for
cutting. Therefore,
for safety reasons, it is recommended that user place the work piece to be cut
on the
worktable or miter saw platform (lb), adjust the angle, and thereafter begin
cutting it with
the saw. The arm support (3) which connects the saw unit (18) to a side of the
worktable
shall be shaped in a manner that allows the work piece to have clearance to
pass through.
In the preferred embodiment, this arm support shall be shaped as a "C."
In addition, the fence (2) secures the work piece in place for cutting. The
platform
table insert (22) protects the saw blade (20) in case the saw unit (18) was
carelessly handled
by user and the saw blade (20) was misaligned.
To be operated under table saw mode, user must remove the fence (2) from its
position, place the rail guide bar (6) inside the rail guide slot ramp (7) at
the table saw
platform (la), and secure it by clamp or bolt knobs (4) to the side of the
table saw platform
(1 a). The fence (2) may be used as a rail guide for the table saw conversion.
The scale
marking (8) iri inches or centimeters serves as a guide to adjust the fence
(2) to the desired
width for cutting. The work piece must then be placed on the table saw
platform (1a) and
the saw blade (20) will cut it on top of the platform table insert (22). The
work piece may
to
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also be cut in an angle because the saw blade (20) may be adjusted to an angle
by the knob
handle tilt control (10) on the arm support (3).
To operate the saw in table saw mode, user must first tighten the slide bar
locking
knob assembly (11) to secure the saw unit (18) into a set position to avoid
accidents;
thereafter lock the stay down blade lock knob (12) which secures the saw blade
(20) into a
downward position, and ftnally pushing the safety switch control (13) to lock
the saw unit
(18) into place. Unless these three elements (locking knob assembly (11), stay
down lock
knob (12), and safety switch control (13)) of the safety mechanism are locked
or activated,
user may not operate the tool as a table saw.
User can determine the angle of the cut in table saw mode by operating the
knob
handle tilt control (10) that can be tightened to adjust the saw blade (20) to
the desired angle
which will be indicated on the angle tilt scale (15). In addition, user may
determine the
length of the cut with the scale marking (8) at the table saw platform (la).
DESCRIPTION OF ALTERNATE EMBODIMENTS
The present invention embodies a combination table-miter saw & assembly. As
mentioned above, the preferred embodiment of the invention is made of metals.
Alternative
embodiments of the invention are made of materials such as but not limited to
plastic,
rubber or man made materials. With respect to the locking handle assembly
(17), the
preferred embodiment is made of metal, and alternate embodiments may be made
of rubber,
plastic or man made materials. In connection to the adjustable and removable
non slip foot
base (9), the preferred embodiment is made of rubber, while other embodiments
may have
such element made of materials such as but not limited to plastic or man made
materials.
The saw blade (20) may be made of metal or of carbide.
In an embodiment of the invention the work tool may be used as a table saw or
as a
fixed miter saw. In this embodiment, the saw unit slide bar (16) is suppressed
from the
invention.
In another embodiment of the invention, user may remove the saw unit (18), the
handle with grip with motor switch control assembly (19), the saw blade (20),
and the
motor (21), and replace them with any other compatible elements that may be
sold in the
market and that serve the same purposes. Therefore, this embodiment may be
flexible to
adjust to other saw units in the market.
11
CA 02513694 2005-07-19
WO 2004/067236 PCT/US2003/001769
The invention is not however limited to materials and embodiments described
above; they are given as examples only. The scope of the invention should be
determined
by its claims, and not by a particular embodiment of the invention.
12
