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Patent 2058174 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 2058174
(54) English Title: WORKBENCH AND WORKTABLE
(54) French Title: ETABLI ET TABLE DE TRAVAIL
Status: Deemed expired
Bibliographic Data
(51) International Patent Classification (IPC):
  • B25H 1/04 (2006.01)
  • B25H 1/08 (2006.01)
  • B25H 1/10 (2006.01)
  • B25H 1/18 (2006.01)
(72) Inventors :
  • PEARCE, PHILLIP WILLIAM (United Kingdom)
(73) Owners :
  • BLACK & DECKER INC. (United States of America)
(71) Applicants :
(74) Agent: GOWLING WLG (CANADA) LLP
(74) Associate agent:
(45) Issued: 2001-07-10
(22) Filed Date: 1991-12-20
(41) Open to Public Inspection: 1992-06-22
Examination requested: 1998-02-16
Availability of licence: N/A
(25) Language of filing: English

Patent Cooperation Treaty (PCT): No

(30) Application Priority Data:
Application No. Country/Territory Date
9027775.7 United Kingdom 1990-12-21
9105059 United Kingdom 1991-03-11

Abstracts

English Abstract



A workbench comprises a work surface disposed on a supporting structure.
The work surface comprises a vice jaw member carrying a first vice jaw and a
worktable having a second complimentary vice jaw. The worktable, in a working
position thereof, lies in the same plane as the jaw member, and the jaws face
one
another and are adapted to be moved towards and away from one another by vice
operating means. The worktable is pivotally mounted with respect to the
supporting
structure about an axis lying adjacent the back edge of the worktable, thereby
enabling
the worktable to be pivoted away from the supporting structure to give access
to the
underside of the worktable. The underside is provided with means for mounting
at
least one power tool thereon. and has several tool apertures through which
working
parts of the power tools can project to the upper side of the worktable for
working on
a workpiece presented to it when the worktable is returned to the working
position.
The vice operating means enables asymmetric separation between the vice jaws.


Claims

Note: Claims are shown in the official language in which they were submitted.



-10-

CLAIMS

1. A workbench comprising a work surface disposed on a supporting structure,
the work surface comprising a vice jaw member carrying a first vice jaw and a
worktable having a second complimentary vice jaw, the worktable in a working
position thereof lying substantially in the same plane as the jaw member, the
said jaws
facing one another and being adapted to be moved towards and away from one
another in said plane by vice operating means, and the worktable being
pivotally
mounted with respect to said supporting structure so as to enable said
worktable to be
pivoted away from the supporting structure to give access to the underside of
the
worktable which is provided with means for mounting at least one power tool
thereon,
the worktable having a tool aperture through which a working part of said at
least one
power tool is adapted to project to the upper side of the worktable for
working on a
workpiece presented to it when the worktable is returned to said working
position.

2. A workbench as claimed in claim 1 in which, said worktable is pivotable
about
an axis lying parallel to the vice jaw of the worktable and spaced therefrom.

3. A workbench as claimed in claim 2 in which said worktable has at least two
hinge means fixed thereto for pivotal connection to said support structure, in
which
said support structure comprises a collapsible frame including two spaced
parallel
support beams, each incorporating separate vice operating means, said vice jaw
member being fixed to one end of each beam and in which said worktable is
substantially rectangular in plan and in which said pivot axis is parallel
with a rear
edge of said worktable and spaced therefrom by an amount less than the
separation of
the upper side of the worktable and said beam, thereby enabling said worktable
to
pivot from said working position to a substantially horizontal inverted
position.

4. A workbench as claimed in claim 3 in which said hinge means is fixed to
support blocks supported on said beams and connected to said vice operating
means
through a longitudinal slot in each beam.



-11-

5. A workbench as claimed in claim 3 in which each hinge means comprises first
and second hinge parts, said first parts being fixed to the underside of said
worktable
and said second parts being pivoted to said first parts and being secured to
said beams.

6. A workbench as claimed in claim 5 in which said worktable is a metal sheet
with a downwardly depending edge forming said vice jaw.

7. A workbench as claimed in claim 5 in which one end of each of said second
parts of each hinge means lies adjacent said downwardly depending edge when
the
worktable is in said work position such that said edge is gripped between said
end and
said first vice jaw when said vice operating means is operated.

8. A workbench as claimed in claim 6 in which said downwardly depending edge
extends around the whole of said worktable and has cut-outs at the rear edge
thereof
opposite each of said hinge means.

9. A workbench as claimed in claim 8 in which a guide fence is provided
comprising two L-sections secured as a T with the stem of the T forming said
guide
and the cross of the T being securable to said downwardly depending edge at
one side
of said worktable by a bolt passing through and slidable along a slot in said
edge.

10. A workbench is claimed in claim 9 further comprising a plate having a tool
aperture corresponding with but smaller than said tool aperture in the
worktable.

11. A workbench as claimed in claim 10 in which indentations are formed in
said
worktable providing rigidity therefor and in which said plate is aluminium and
has
corresponding indentations to aid location of said plate with respect to the
worktable.

12. A workbench as claimed in claim 11 in which said means for mounting said
at
least one power tool includes clip means comprising an arcuate member having a
slot


-12-

through which a screw is adapted to pass, having first been fitted through a
hole in
said worktable, nut means being adapted to fit said screw and, on tightening
thereof,
to clamp the ends of said arcuate member against the underside of said
worktable, a
part of a power tool being fitted under one of said ends.

13. A workbench as claimed in claim 12 in which each hole is countersunk
sufficiently to ensure that then head of said screw does not stand proud of
the surface of
said worktable.

14. A workbench as claimed in claim 13 in which said plate has holes
corresponding with each worktable hole which said plate covers, the
countersinking of
each said worktable hole further serving to correctly locate said plate with
respect to
the worktable.

15. A workbench as claimed in claim 14 further comprising locking means to
lock
the worktable in said working position.

16. A workbench as claimed in claim 3 in which said hinge means is provided
with a degree of freedom of movement to allow the worktable to move away from
said vice jaw member in the plane of said working position from a first to a
second
disposition thereof, and in which said locking means comprise hook means on
one of
said worktable and support structure adapted, in the first of said
dispositions, to
engage the other of said support structure and worktable respectively to lock
the
worktable in said working position, and to disengage the worktable from said
support
structure in the second of said dispositions to allow the worktable to be
pivotted away
from said support structure.

17. A workbench as claimed in claim 16 in which said degree of freedom is
provided by a pivot pin secured between said hinge parts passing through and
being
slidable in a slot in said first part, the slot being oriented in a direction
parallel to the
plane of the worktable.



-13-

18. A workbench as claimed in claim 16 in which said hook means comprises a
rearwardly directed ledge on said downwardly depending edge, the ledge being
adapted to engage the front of said second hinge part.

19. A worktable for use on a workbench, said worktable comprising a vice jaw,
for co-operation with a complimentary vice jaw on said workbench, and at least
two
hinge means having a pivot axis parallel with and spaced from said vice jaw,
the
worktable having means for mounting at least one power tool on an underside
thereof,
and a tool aperture through which a working part of said power tool is adapted
to
project for operation on a workpiece on an upper side of said worktable, said
worktable being adapted to be secured to said workbench by means of said hinge
means.

20. A workbench as claimed in claim 4 in which each hinge means comprises
first
and second hinge parts, said first parts being fixed to the underside of said
worktable
and said second parts being pivoted to said first parts and being secured to
said beams.

21. A workbench as claimed in claim 20 in which said worktable is a metal
sheet
with a downwardly depending edge forming said vice jaw, and in which one end
of
each of said second parts of each hinge means lies adjacent said downwardly
depending edge when the worktable is in said work position such that said edge
is
gripped between said end and said first vice jaw when said vice operating
means is
operated.

22. A workbench as claimed in claim 21 in which said downwardly depending
edge extends around the whole of said worktable and has cut-outs at the rear
edge
thereof opposite each of said hinge means.

23. A workbench as claimed in claim 15 in which said hinge means is provided
with a degree of freedom of movement to allow the worktable to move away from


-14-

said vice jaw member in the plane of said working position from a first to a
second
disposition thereof, and in which said locking means comprise hook means on
one of
said worktable and support structure adapted, in the first of said
dispositions, to
engage the other of said support structure and worktable respectively to lock
the
worktable in said working position, and to disengage the worktable from said
support
structure in the second of said dispositions to allow the worktable to be
pivotted away
from said support structure.

24. A workbench as claimed in claim 23 in which said degree of freedom is
provided by a pivot pin secured between said hinge parts passing through and
being
slidable in a slot in said first part, the slot being oriented in a direction
parallel to the
plane of the worktable.

25. A workbench as claimed in claim 24 in which said hook means comprises a
rearwardly directed ledge on said downwardly depending edge, the ledge being
adapted to engage the front of said second hinge part.


Description

Note: Descriptions are shown in the official language in which they were submitted.



CA 02058174 2001-02-09
WORKBENCH AND WORKTABLE
BACKGROUND OF THE INVENTION
This invention relates to workbenches, and worktables therefor, and
particularly to workbenches ~of the type comprising a supporting structure and
a work
surface disposed on the structure and including vice means.
Such workbenches are well known and described, for example, in
EP-0222477. In WO-8800514 there is disclosed a workbench of this type having a
cut-out in one jaw of the vice: means in which a cover plate may be disposed
for
ordinary vice and work surface usage, but which can be replaced by an insert
plate
adapted to carry various power tools. One such tool is a circular saw and in
which
event the workbench is transformed into a saw table. Different insert plates
are used
for mounting different power tools, but a statement is made (but not shown)
that
alternatively, one insert plate may be provided which is suitable for use with
a range
of different power tools.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a workbench, and a
worktable for a workbench, which can perform the functions of vice and work
surface
as described in EP-0222477 but which also serves as a worktable for various
power
tools, and without any loss of performance of the vice function.
In accordance with the present invention there is provided a workbench
comprising a work surface disposed on a supporting structure, the work surface
comprising a vice jaw member carrying a first vice jaw and a worktable having
a
second complimentary vice vjaw, the worktable in a working position thereof
lying
substantially in the same plane as the jaw member, with said jaws facing one
another
and being adapted to be moved towards and away from one another in said plane
by
vice operating means, and the worktable being pivotally mounted with respect
to said
supporting structure so as to enable said worktable to be pivoted away from
the


CA 02058174 2001-02-09
-2-
supporting structure to give access to the underside of the worktable which is
provided with means for mounting at least one power tool thereon, the
worktable
having a tool aperture through which a working part of said at least one power
tool is
adapted to project to the upper side of the worktable for working on a
workpiece
presented to it when the worktable is returned to said working position.
Preferably said workl:able is pivotable about an axis lying parallel to the
vice
jaws of the worktable and spaced therefrom.
Preferably said vice jaw member is fixed with respect to the supporting
structure and said worktable is movable by said vice operating means.
Preferably said vice operating means enables asymmetric separation between
the vice jaws in said plane.
Preferably said worktable has at least two hinge means fixed thereto for
pivotal connection to said support structure; which preferably comprises a
collapsible
frame including two spaced parallel inverted channel sections, each
incorporating
separate vice operating means, said vice jaw member being fixed to one end of
each
channel section and said hinge means being fixed to support blocks supported
on said
channel sections and connected to said vice operating means through a
longitudinal
slot in each channel section.
Preferably locking means is provided to lock the worktable in said working
position. Said hinge means rnay be provided with a degree of freedom of
movement to
allow the worktable to move away from said vice jaw member in the plane of
said
working position from a first to a second disposition thereof, and in which
case said
locking means may comprise hook means on one of said worktable and support
structure adapted, in the firsl: of said dispositions, to engage the other of
said support
structure and worktable respectively to lock the worktable in said working
position,
and to disengage the worktable from said support structure in the second of
said
dispositions to allow the worktable to be pivoted away from said support
structure.
Preferably said hinge means comprises first and second hinge parts, the first
parts being of channel section and fixed to the underside of said worktable
and the
second part being pivoted to the first part and being secured to said support
structure.
Said degree of freedom is preferably provided by a pivot pin secured between
said


CA 02058174 2001-02-09
-3-
hinge parts passing through and being slidable in a slot in said first part,
the slot being
oriented in a direction parallel to the plane of the worktable.
Said hook means may comprise a backwardly directed ledge on the underside
of the worktable behind its complimentary vice jaw, the ledge being adapted to
engage the front of said second hinge part.
The invention also provides a worktable for use on a workbench, said
worktable comprising a vice jaw, for cooperation with a complimentary vice jaw
on
said workbench, and at least two hinge means having a pivot axis parallel with
and
spaced from said vice jaw, the worktable having means for mounting at least
one
power tool on an underside thereof, and a tool aperture through which a
working part
of said power tool is adapted. to project for operation on a workpiece on an
upper side
of said worktable, said worktable being adapted to be secured to said
workbench by
means of said hinge means.
BRIEF DESCRIPTION O:F THE DRAWINGS
I 5 The invention is further described hereinafter, by way of example only,
with
reference to the accompanying drawings, in which:
FIG. 1 is a front perspective view of a workbench according to the present
invention;
FIG. 2 is a left side elevational view, (partly in section along the line II--
II in
FIG. 3), of the workbench in FIG. 1;
FIG. 3 is a front elevational view in the direction of the arrow A in FIG. 2,
and
also partly in section along the line III--III in FIG. 2;
FIG. 4 is a bottom plan view in the direction of the arrow B in FIG. 2;
FIG. 5 is a part section on the line V--V in FIG. 4;
FIG. 6 is a partial section through a preferred embodiment of the present
invention, along the line VI--VI in FIG. 7; and
FIG. 7 is a section of the line VII--VII in FIG. 6.


CA 02058174 2001-02-09
-4-
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the drawings, a workbench 10 according to the present invention comprises
a support structure 3 having a work surface mounted thereon. The work surface
consists of a worktable 2 and. a vice jaw member 4. The vice jaw member 4 is
securely
fixed on two inverted channel section beams 8, through support blocks 11. The
vice
jaw member 4 is made of ply wood and has a number of holes 5 for receiving
page 43,
which serve as abutment means for the vice function of the workbench 10 as
explained further below.
The support structure 3 comprises two parallel I-shaped elements 30, pivotally
connected to the beams 8 and a base 37 in parallelogram formation. A diagonal
member 31 braces the structure and holds it in the position shown. A latch
mechanism
(not shown) releases the diagonal member 31 and enables the structure to be
folded
flat. Legs 38 depend from each corner of the base 37, and can be folded flush
with the
base for storage or to reduce the working height of the workbench 10.
The vice jaw member 4 and structure 3, including the beams 8, are well known
and described in EP-0222477 and need no further description here. Indeed, it
is one of
the features of the present invention that a worktable according to the
invention can be
employed on existing workbenches having such a construction as shown and
described in the aforementioned European patent.
The worktable 2 comprises a substantially flat sheet of steel formed as a tray
with downwardly depending lips 51 a-d. To the underside of the worktable 2 are
fixed
three channel sections forming first hinge parts 53, near the rear edge Slb of
the
worktable. In two of these parts are pivotally supported about hinge axis 54
second
hinge parts 55, which, together with the first hinge parts 53 constitute hinge
elements
50. The second hinge parts 5:> are secured by bolts 56 (see FIGS. 2 and 3)
through
support blocks 58 to vice sockets 60 which protrude through slot 62 formed in
the top
of inverted channel beam 8. The vice socket 60 is threaded on vice screw 64.
The vice
screw 64 is rotatable by handle 9 (FIG. 1) causing vice socket 60 and support
block 58
to slide along beam 8.


CA 02058174 2001-02-09
-5-
When the worktable :? is pivoted down from the position shown in FIG. 1 to a
working position as shown in FIGS. 2 and 3, its front edge 51 a forms a vice
jaw lying
in the same plane as fixed vice jaw 4. Operation of the handles 9 moves the
jaws
towards and away from one another in parallel or asymmetrically, as fits the
article
which is to be gripped between them.
The first hinge parts .'>3 are a channel section so that they provide lateral
support for the first hinge parts 55 when the vice is operated, particularly
when
asymmetric gripping between the vice jaws is required.
When an article is clamped between the vice jaws 4, S l a the strain on the
worktable 2 and hinges 50 is kept to a minimum by the back of the front edge
51 a
abutting the front 63 of the hinge parts 55 (see FIG. 4), so that the forces
generated by
vice closure are absorbed directly by the support block 5$ and vice socket 60.
However, the reason why the hinge parts 55 are long is so as to position the
hinge axis 54 of the hinge elements 50 adjacent or near to the rear edge S lb
of the
worktable 2. This enables the worktable to be pivoted upwardly and away from
the
fixed vice jaw 4 (once the tension on the vice screws 64 has been released) to
give
access to the underside of the worktable 2.
Indeed the edge 51b is provided with cut-outs 57 opposite each hinge part 53
so that the worktable 2 can be pivoted over backwards to a substantially
horizontal
inverted position. In this respect, the hinge axis 54 is as far removed from
the edge
S l b as the vertical clearance from the beam 8 allows. This has the effect of
minimising the potentially damaging leverage that the hinge parts 55 could
exert on
the edge S l b when the worktable is pivoted that far backwards.
The worktable 2 has various tool apertures such as those shown at 70, 74 and
76, each serving to receive the working part of a different power tool. Thus
aperture
70 is a long slot adapted to receive the blade of a circular saw. Numerous
other holes
80 are provided around the worktable 2 to enable a power tool to be secured to
the
underside of the worktable.
Referring now to FIGS. 2 and 3, the worktable 2 includes, particularly for
when a circular saw is employed, a rip fence 82 and saw guard 84. The rip
fence 82
includes two L-sections 86, 88 fixed together in a T. The long section 86
forms the


CA 02058174 2001-02-09
-6-
guide while the section 88 is securable to the edge S l d of the worktable 2
by a screw
91 passing through a slot 93 (see FIGS. 1, 3 and 4,) in the edge S ld. Thus
the position
of the fence guide 86 is adjustable for cuts of different widths of material
fed to saw
blade 90.
The saw guard 84 consists of a box 92 and a pivotable support 94 retained by
clip 96 disposed on the underside of the worktable 2 adjacent its rear edge S
lb. The
rear edge 51 b has a cut-out 98 through which the guard support 94 passes.
With reference to FIGS. 1 and 4, hole 72 is adapted for a jig saw, hole 76 for
a
muter (neither shown), while hole 74 is to receive the chuck of a drill (also
not
shown). The tools are secured in a working position in the worktable by
various
means as may be convenient. For example, collars are available for the
attachment of
drills to various apparatus and the same means can be employed here. Clips, as
described further below, may be provided, and these enable a wide variety of
different
makes of tools, which, in the case of circular saws and jigsaws, invariably
have a shoe
plate by means of which they may be secured to the worktable.
In any event, however, one of the features of the present invention is that
the
tools which it might be desired to employ in the worktable 2 can be fitted
with the
worktable in a horizontal inverted position. This considerably facilitates
attachment of
the power tool to the worktable. Subsequently the worktable can be pivoted
down to
the position shown in FIGS. 2 and 3 once the tools are secured in place and
are to be
employed.
The weight of the tools (and the material being worked on) will normally be
adequate to hold the worktable in its working position, but added security can
be
achieved simply by tightening the vice jaws S la, 4 against each other. This
tensions
and tightens the hinge elements 50, as well as clamping the edge S l a of the
worktable
between hinge part 55 (63) and the vice jaw 4.
Nevertheless, even while a tool is in place in the worktable 2, the vice
function
of the workbench 10 is still operational.
The third hinge part 5 3 is provided so that the worktable 2 can be used on
workbenches of a different configuration to that shown in fIG. 1, that is to
say, on
workbenches having beams 8 with a smaller separation between them that that of
FIG.


CA 02058174 2001-02-09
_7_
1. Also it should be noted that the worktable 2 is provided with holes 5 at
various
locations adapted to receive :Further pegs 43 enabling objects to be clamped
on the
workbench 10 which are wider than the maximum separation between the vice jaws
Sla, 4.
The holes 5 are supported by sleeves 6 which prevent pegs inserted into them
from twisting out of alignment when force is applied to them by an article
gripped
between those pegs and opposing pegs 43 in the vice member 4.
The worktable tray m.ay be stiffened by indentations such as those shown at
99. Also, the various holes 80 will be counter-sunk by indentation of the tray
2 so that
the heads of bolts employed to hold tools supported underneath the worktable 2
will
not stand pround of its surface.
It will be appreciated that when a power tool is to be mounted in a steel
worktable such as that described herein, and where the means of mounting the
tool is
as arbitrary and flexible as discussed further below., then it is very
desirable that
means are provided to ensure: as far as possible that the working parts of the
tool do
not contact the worktable. 'To this end, the apertures 70, 72, 74 and 76 are
all large to
give plenty of clearance. Moreover there is provided an aluminium plate 71
FIGS. 4
and 5) for use with a circular saw or a jig saw. This plate has corresponding
apertures
70', 72' which are smaller than those of the worktable 2. The plate 71 is
located
against the worktable 2 by holes 80' and indentations 99' corresponding in
size and
position with those in the worktable 2. When a tool (in this case either a
jigsaw or
circular saw) is to be attached to the worktable, the plate 71 is first
located on the
indentations 99 and countersunk holes 80. The tool (for example circular saw
100,
FIG. 5) is then placed on top with its blade 104 protruding through the
relevant
aperture 70, 70'.
The saw 100 has a shoe 102' which rests on the tops of the indentations 99'
and
is held in that position by clips 105 which simply comprise an arcuate member
106
with a central slot 108 for a screw 110 which is seated in an adjacent hole 80
in the
worktable 2 and secured by a thumb-screw 112. The clip 106 deforms slightly on
- tightening of thumb-screw 112 to grip firmly the shoe plate 102. At least
two and
preferably at least three of such clips 106 are employed to secure the tool
100 in place.


CA 02058174 2001-02-09
_g-
A similar arrangement is feasible with a jigsaw as regards aperture pair 72,
72'.
However, with this arrangement it is of course quite feasible for a careless
operator to
position the tool with respect to the plate 71 so that the blade contacts the
aperture 70'
or 72' as the case may be. However, because the plate 71 is made of aluminium
or a
similar soft material, damage to the blade, and the danger of its shattering
and
possibly causing injury, is minimised. The possibility of inaccurate
positioning of the
plate 71 with respect to the worktable is small, given the matching positions
of the
holes 80, 80' and indentations 99, 99', which naturally tend to locate the
plate 71
correctly on the worktable 2.
A similar arrangement may be provided for a muter as regards aperture 76 in
the worktable, although nothing further in that respect is required for the
drill aperture
74. Here the whole chuck of the drill protrudes through the aperture 74 so
there is no
danger of rotating tool bits contacting the worktable.
In contra-distinction to the workbench 10 shown in the drawings, it is quite
feasible to arrange for the fi~c:ed vice member 4 to be the vice member which
is
movable with respect to the supporting structure 3 by the vice operating means
9. In
this event the slots 62 in the beams 8 may be replaced by a line of keyhole
slots in
each beam as shown in EP-0222477. The hinge parts 55 are then fixed to the
support
blocks 58 which are each provided with a downwardly projecting lug adapted to
engage a keyhole slot in each beam. Which keyhole slot is selected depends on
the
gap required between the j aw members.
FIGS. 6 and 7 illustrate a preferred embodiment of the present invention.
Here,
the hinge means 50 comprises first hinge part 53' secured to the underside of
the
worktable 2, for example by spot welding, and second hinge part 55, which is
secured
to said support block 58. A stud and bolt combination 54 secures the two hinge
parts
together and forms a pivot pin between them.
When pressure is applied in the direction of the arrow X in FIG. 6 by objects
clamped between the vice jaws, some of the stress on face 51a is absorbed by
the front
edge 63 of the second hinge part 55. This also removes stress on the pivot pin
54.
However, the embodiment of FIG. 6 provides a backwardly turned ledge or
hook means 120 on the bottom of face 51 a of the worktable 2. This serves to
hook


CA 02058174 2001-02-09
-9-
under the front edge 63 of the second hinge part which here protrudes beyond
the
front edge of the support block 58. By this means the worktable 2 is prevented
from
pivotting upwardly which it might tend to do under certain stresses by the
effect
referred to as cam-out. Although this effect is already countered to some
extend by the
back of face 51a being pressed against front edge 63 of the hinge part 55,
this on its
own will not always prevent cam-out. However, the provision of said hook means
120
does serve this purpose.
In order to allow the worktable to pivot upwardly when this is wanted, for
example to position or reposition tools on the under-side of the worktable,
then it is
necessary to allow the table a? first to move in a direction opposite to arrow
X. This is
achieved by mounting the pivot pin 54 in a slot 122 in the first hinge part
53', and in
circular hole 121 in the second hinge part 55.
Thus the whole worktable may be shifted leftwardly (in FIG. 6) to move the
pin 54 to the right end 124 of slot 122. In this position the ledge 120 clears
the second
hinge part 55 and the worktable can pivot upwardly.
It will be apparent that, apart from the engagement of the hook means 120, the
table cannot pivot upwardly in the position shown in FIG. 6 because the hinge
parts
53', 55 would interfere with one another. As it is, they are provided with
chamfered
edges 126, but this would be insufficient to allow pivotting in the position
of FIG. 6.
It is for this reason that the slot 122 is in the first hinge part 53' and not
in the second
hinge part 55. If the latter was the case then movement of the worktable 2 to
the left to
release the hook means 120 would move the hinge means 50 to a position
equivalent
to that shown in FIG. 6, and so pivotting would be prevented. Because the slot
122 is
in the first hinge part 53', that part is disposed inside the confines of the
second hinge
part 55 in this embodiment. 'This means that tightening of the pivot pin 54
will not
affect sliding thereof in the slot 122.
On the other hand, if the hook means 120 was short, and if sufficient slack
was
provided in the hinge means 50, an arrangement where the slot 122 was in the
second
hinge element 55 could, in fact, be contemplated, although a certain amount of
judicial persuasion may be required to manouvre the worktable from its locked
working position to a freely pivotting position.

Representative Drawing
A single figure which represents the drawing illustrating the invention.
Administrative Status

For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee  and Payment History  should be consulted.

Administrative Status

Title Date
Forecasted Issue Date 2001-07-10
(22) Filed 1991-12-20
(41) Open to Public Inspection 1992-06-22
Examination Requested 1998-02-16
(45) Issued 2001-07-10
Deemed Expired 2004-12-20

Abandonment History

There is no abandonment history.

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Application Fee $0.00 1991-12-20
Registration of a document - section 124 $0.00 1993-06-15
Maintenance Fee - Application - New Act 2 1993-12-20 $100.00 1993-11-16
Maintenance Fee - Application - New Act 3 1994-12-20 $100.00 1994-11-15
Maintenance Fee - Application - New Act 4 1995-12-20 $100.00 1995-11-14
Maintenance Fee - Application - New Act 5 1996-12-20 $150.00 1996-12-05
Maintenance Fee - Application - New Act 6 1997-12-22 $150.00 1997-12-09
Request for Examination $400.00 1998-02-16
Maintenance Fee - Application - New Act 7 1998-12-21 $150.00 1998-12-09
Maintenance Fee - Application - New Act 8 1999-12-20 $150.00 1999-12-03
Maintenance Fee - Application - New Act 9 2000-12-20 $150.00 2000-12-01
Final Fee $300.00 2001-04-05
Maintenance Fee - Patent - New Act 10 2001-12-20 $200.00 2001-12-03
Maintenance Fee - Patent - New Act 11 2002-12-20 $200.00 2002-11-29
Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
BLACK & DECKER INC.
Past Owners on Record
PEARCE, PHILLIP WILLIAM
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
Documents

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Document
Description 
Date
(yyyy-mm-dd) 
Number of pages   Size of Image (KB) 
Cover Page 2001-07-04 1 54
Representative Drawing 2001-07-04 1 20
Abstract 2001-02-09 1 28
Description 2001-02-09 9 468
Claims 2001-02-09 5 204
Drawings 2001-02-09 4 121
Cover Page 1993-11-03 1 16
Abstract 1993-11-03 1 32
Claims 1993-11-03 6 253
Drawings 1993-11-03 4 131
Description 1993-11-03 11 516
Representative Drawing 1999-04-23 1 40
Correspondence 2001-04-05 1 33
Prosecution-Amendment 2000-08-29 2 60
Prosecution-Amendment 2001-02-09 21 878
Assignment 1991-12-20 8 250
Prosecution-Amendment 1998-02-16 1 44
Prosecution-Amendment 1998-06-17 2 93
Fees 1996-12-05 1 68
Fees 1995-11-14 1 95
Fees 1994-11-15 2 167
Fees 1993-11-16 1 99