Information
-
Patent Grant
-
6305498
-
Patent Number
6,305,498
-
Date Filed
Wednesday, July 5, 200024 years ago
-
Date Issued
Tuesday, October 23, 200123 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 182 129
- 182 153
- 182 155
- 182 1781
- 182 1811
- 182 1822
- 182 1861
- 182 1867
- 182 224
- 182 225
-
International Classifications
-
Abstract
A sawhorse includes a base assembly, a workpiece support structure mounted on the base assembly and an attachment for the base assembly in the form of a tool carrier assembly comprising a flexible carrier sheet, a plurality of tool holding elements affixed to the carrier sheet and a plurality of fasteners fixedly affixing the carrier sheet a support member of the base assembly in a configuration providing access to tools held by the tool holding elements. The tool carrier assembly is positioned such that the assembly is below the support surface to allow the surface to support a workpiece without interference from the assembly and such that the tool carrier assembly does not impede movement of the base assembly between closed and open positions.
Description
FIELD OF THE INVENTION
The invention relates in general to sawhorses and, more particularly, to a sawhorse that has a tool carrier member relatively permanently attached to it.
BACKGROUND OF THE INVENTION
Sawhorses are generally used in pairs to support construction-related or carpentry-related workpieces such as boards, planks, pipes, etc. Additionally, sawhorses provide a degree of ground clearance needed for some tools, such as saws, to function properly.
For convenience, construction workers or carpenters keep their tools in a tool carrier of some sort, with which the organization and relatively close proximity of their tools can be maintained, that is laid over or around the top or upper portion of a sawhorse. A tool carrier which covers the sawhorse's top surface can reduce or impede the stability of a workpiece supported on the sawhorse and/or impede opening and closing of the sawhorse on which the tool carrier is placed, and a tool carrier which is draped over the top of a sawhorse is also more likely to be damaged—either by the tools the workman is using of by the workpiece itself. Furthermore, the sawhorse tool carriers known in the prior art are all relatively loosely placed on the sawhorse. Because of this, the tool carrier can fall off the support and become lost relatively easily.
SUMMARY OF THE INVENTION
The present invention avoids these limitations in the prior art by providing a sawhorse that has a tool carrier member relatively permanently attached to one of the support members in a manner which does not obstruct the workpiece support surface or impede opening and closing of the support members.
In preferred embodiments, the sawhorse includes a pair of support members that are pivotally connected at their top ends. The support members can be pivoted into a collapsed storage configuration or spread apart into an open working configuration. At least one foldable cross-brace helps secure the support members in the working configuration.
The tool carrier member has a variety of loops and pockets to hold a worker's tools and is conveniently located on the outside surface of one of the support members. A sawhorse according to the invention has advantages in that, because the tool carrier member is relatively securely attached to the support member, the tool carrier member is not likely to fall off the support member or be lost when the sawhorse is moved. Furthermore, because the tool carrier member does not cover the workpiece supporting surface, it is less likely to be damaged by a tool operating on the workpiece and the workpiece will be more securely supported on the surface.
Additionally, the sawhorse of the invention has a pair of flip-up workpiece restraints that restrict or prevent lateral movement of a workpiece supported on the sawhorse. These restraints also act as guides when sliding a workpiece across the support surface.
The invention also provides a sawhorse comprising a base assembly including a pair of support members each formed from a plastic material, the support members being connected to one another for movement between an open working configuration in which the base assembly is self-supporting in an upright position and a closed storage configuration. A workpiece support structure mounted on the base assembly and defines an upwardly facing support surface for supporting a workpiece when the base assembly is in its self-supporting upright position. An attachment for the base assembly is provided in the form of a tool carrier assembly comprising a flexible carrier sheet, a plurality of tool holding elements affixed to the carrier sheet and a plurality of fasteners fixedly affixing the carrier sheet to one of the pair of support members in a configuration providing access to tools held by the tool holding elements when the base assembly is in the open working configuration thereof. The tool carrier assembly is positioned (a) such that the tool carrier assembly is below the workpiece support surface to allow the support surface to support a workpiece without interference from the tool carrier assembly and (b) such that the tool carrier assembly does not impede movement of the base assembly between its closed storage configuration and its opened working configuration.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a perspective view of a sawhorse of the present invention with the support members in an open working configuration;
FIG. 2
is a perspective view of the sawhorse illustrated in
FIG. 1
with the support members in a closed storage configuration;
FIG. 3
is a detailed frontal view of the rivet and portions of the tool carrier member and support member of the sawhorse of the present invention;
FIG. 4
is a cross-sectional view, taken along line
4
—
4
in FIG;
FIGS. 5-7
are a perspective view and side views showing a workpiece restraint used on the sawhorse of the invention;
FIG. 8
is a bottom view of the sawhorse shown in
FIG. 1
;
FIG. 9
is an end view of one of the support members, taken along the line
9
—
9
in
FIG. 1
;
FIG. 10
is a perspective view of the upper portion of the sawhorse shown in
FIG. 1
, shown with the cap member removed;
FIG. 11
is a detail view of the hinge structure encircled in
FIG. 10
; and
FIG. 12
is a cross sectional view taken through the line
12
—
12
as indicated in FIG.
1
.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1
shows a collapsible sawhorse, generally indicated at
10
, that has a base assembly that includes a pair of support members
12
,
13
that are pivotally connected at their upper ends along a pivot axis
11
. An upwardly facing workpiece supporting surface
14
is located generally at the upper ends of the support members
12
,
13
.
FIG. 2
shows the sawhorse
10
in a collapsed or closed storage configuration with the support members
12
,
13
generally adjacent to each other.
An attachment for the base assembly is provided in the form of a tool carrier member or assembly
16
that is attached to an outside surface of one of the support members, e.g.,
12
. The tool carrier member
16
comprises a substantially flat, flexible carrier sheet or base member
18
formed from rugged fabric or material such as canvas or leather. Alternatively, base member
18
may be formed from material such as flexible sheet plastic, nylon, or other rugged, lightweight abrasion-resistant materials. A plurality of tool holding elements in the form, for example, of a number of tool-receiving loops
20
and pockets
21
may be attached to base member
18
. For example, tool carrier member
16
includes horizontally arranged, upwardly opening pockets
21
, which are attached to the base member
18
along their lower edges. Loops
20
are also horizontally arranged with their respective openings oriented vertically and are attached near an upper edge of base member
18
. Another loop
22
can be opened and closed and has a horizontally oriented opening. Shown secured in FIG.
1
and released in
FIG. 2
, one end of loop
22
is releasably securable by, for example a hook-and-loop connection, indicated at
23
, or button fasteners. The tool carrier member
16
may, of course, include any combination of loops
20
,
22
and pockets
21
or other tool retaining features.
As shown in
FIGS. 1 and 2
, the tool carrier member
16
is coextensive with the support member
12
in the widthwise direction (i.e., is approximately the same width as the support member), and it is attached at the corners to the support member
12
. The tool carrier member
16
may alternatively be coextensive with the support member
12
in both the longitudinal and vertical directions, i.e., it may have essentially the same height and width of the support member to which it is attached. Still further, each of the support members
12
,
13
may have a tool carrier member
16
attached to it if so desired.
As illustrated in greater detail in
FIGS. 3 and 4
, the tool carrier member
16
is relatively securely attached to one of support members such as the support member
12
using a plurality of fasteners such as plastic rivets
24
. Tool carrier member
16
has rivet-receiving openings near each corner, and metallic retaining rings
26
extend through and are crimped around the periphery of each of the rivet-receiving openings to reinforce the openings. Each rivet
24
has a securing head
28
, which engages the associated retaining ring
26
, and a plurality of ramped retaining prongs
30
. As each rivet is pressed into an associated receiving opening, the ramped prongs
30
deflect radially inwardly to pass through the associated mounting opening and then resiliently return to their original positions so as to engage the inner surface of the support member
12
and retain the rivet in the receiving opening. An expansion pin
32
is pressed through the securing head
28
to a position between the ramped prongs
30
and extends substantially along the entire length of the rivet to secure the prongs
30
of rivets
24
in the non-deflected, retaining position. Other means for attaching the tool carrier member
16
to the support member include hook-and-loop connections, with attachment points either at the corners or along the edges of the tool carrier member, and button snaps which may be positioned at the corners and/or spaced along the edges of the tool carrier member
16
.
As further shown in
FIG. 1
, a workpiece support structure or cap member
34
(described in greater detail below) is mounted to the top ends of the support members
12
,
13
and forms the upwardly facing workpiece supporting surface or support surface. A pair of flip-up workpiece restraint members or restraints
36
, shown in detail in
FIGS. 5-7
, are pivotally mounted within recesses
38
formed in the cap member
34
. The recesses
38
are upwardly facing and are located near opposite ends of the cap member
34
. When in a closed position (shown generally in FIG.
2
and in more detail in FIG.
6
), the workpiece restraints
36
are located substantially entirely below the workpiece supporting surface
14
, such that the workpiece supporting surface
14
is unobstructed. When in an open position (shown generally in FIG.
1
and in more detail in FIG.
7
), workpiece restraints
36
extend vertically above workpiece supporting surface
14
such that the workpiece restraints
36
present confronting and longitudinally opposed (i.e., at opposite ends of the cap member
34
) vertical restraining surfaces
40
. The workpiece restraints
36
, and in particular the restraining surfaces
40
, serve as guides for workpieces being moved transversely across the workpiece supporting surface
14
and maintain lateral stability of a workpiece supported on the workpiece supporting surface
14
.
The workpiece restraints
36
each have a pair of pivot arms
42
extending from the opposite sides of a lower portion (relative to the open position) thereof. Each workpiece restraint
36
is press fit into the associated recess
38
, wherein each pivot arm
42
extends into an associated pivot arm-receiving opening formed in an inner surface of the recess
38
to hold the workpiece restraints
36
securely in place. Each pivot arm-receiving opening provides a journaling surface for the associated pivot arm, thereby allowing pivotal movement of the workpiece restraints
36
.
Each support member
12
,
13
has a pair of vertically extending support legs
44
,
46
, which are connected to each other by a cross brace
48
. Depending on the intended use of the sawhorse
10
, i.e., how much weight it will be required to support, the support members
12
,
13
may have more than two support legs and may be connected to each other by two or more cross braces.
As shown in
FIG. 8
, it is preferable for the support members
12
,
13
to be identical. By forming the support members identically, mating or associated features or elements (described in greater detail below) may be formed at opposite sides of a given support member so as to confront or engage the respective mating or associated features on the other support member automatically when the support members are brought together, as shown in FIG.
2
. This identity of the support members also simplifies production and assembly of the sawhorse and reduces costs.
In particular, a pair of reinforcing ribs
50
extend along the length of the inside surface of each support leg
44
—as shown in
FIG. 9
, the reinforcing ribs
50
may be spaced so as to divide the width of the support leg
44
into generally equal dimensions—and a plurality of reinforcing ribs
52
extend along the length of the inside surface of the other support leg
46
of each support member. The relative spacing of the reinforcing ribs
50
,
52
on the support legs of each support member
12
,
13
is such that when the support members
12
,
13
are in the collapsed position, the converging ribs
50
,
52
fit easily between each other.
A sawhorse
10
according to the invention further preferably includes a two-piece latch member. More particularly, each support member
12
,
13
has a bayonet pin portion
54
and a barrel portion
56
extending inwardly from the cross brace
48
at opposite ends thereof. As shown in
FIGS. 8 and 9
, each bayonet pin
54
engages the associated barrel portion
56
upon convergence of the support members
12
,
13
when moving support members
12
,
13
to the collapsed position. (Again, the identity of the support members
12
,
13
facilitates this engagement.) A press fit between the bayonet pins
54
and the associated barrel portions
56
retains the support members in the collapsed position for storage.
Another option (not shown) for retaining the support members in the collapsed position includes a hook-and-eyelet latch. Preferably, the sawhorse would have one or two such hook-and-eyelet latches. One support member, e.g.
12
, would have a hook member extending toward the other support member, which would have an eyelet member that the hook member would engage when the sawhorse is in the stored configuration. A hook-and-loop latch may also be utilized to retain the support members
12
,
13
.
Each cross brace
48
has a handle portion
58
extending downwardly to allow a user to disengage the latch members and open the support members
12
,
13
to the working position more easily. A plurality of non-skid members in the form of a pair of floor-engaging pads
60
made from a frictional, non-skid material (for example, rubber) are attached to lower ends of each of the support legs
44
,
46
.
As noted above, the support members
12
,
13
pivot about axis
11
. As shown in
FIG. 10
, a hinge configuration allowing relative pivotal movement between support members
12
,
13
includes a series of hinge assemblies
62
spaced along the upper ends of the support members
12
,
13
. Each hinge assembly
62
comprises a shaft member
64
and an interconnecting journaling member
66
, as shown more clearly in FIG.
11
. The series of shaft members
64
form the pivot axis
11
. Each journaling member
66
partially surrounds the periphery of the associated shaft member
64
to provide a journaling surface therefor. Each shaft portion
64
is joined to the respective support member
12
,
13
to which it is attached by a pair of extension members
68
, with the distance the shaft portions are spaced above the support members being sufficient for attachment of the cap member
34
and to allow the support members
12
,
13
to move into the collapsed position without obstruction. Similarly, the journaling members
66
are attached to the support members
12
,
13
by base members
70
and are positioned so as to interconnect with the shaft members
64
. As illustrated, each support member has a set of shaft members at one end and a set of journaling members at the other end so that when the identical support members are positioned to face each other and fitted together, the series of shaft members
64
at one end of each support member
12
,
13
engages the corresponding series of journaling members of the other one of the support members
12
,
13
. Each shaft member
64
snaps into interconnecting relation with the associated journaling member
66
and is retained in position by means of a locking member
72
protruding upwardly from the base member
70
.
The shaft members
64
are slightly wider than the journaling members
66
such that a predetermined length
73
of each of the shaft members
64
remains exposed on either side of the journaling members. The cap member
34
has a plurality of downwardly extending, prong-like or fork-like connecting structures
75
shown in
FIG. 12
, formed from webs
77
that snap over the exposed lengths of the associated shaft members
64
to hold the cap member
34
in position. The cap member
34
has side walls
74
(
FIG. 1
) that substantially surround the upper ends of the support members
12
,
13
, including the hinge assemblies
62
, to prevent accidental damage (pinching) to the workpiece or user caused by converging support members
12
,
13
. The cap member
34
further forms the workpiece supporting surface
14
at an uppermost level of the sawhorse
10
.
A number of workpiece supporting structures in the form of supporting pads
76
, e.g. four, are positioned within upwardly facing recesses formed within the cap member
34
, such that upper portions of the supporting pads
76
protrude slightly above the workpiece supporting surface
14
. The supporting pads
76
provide a degree of protection to the workpiece supporting surface
14
from workpieces (and to workpieces from the workpiece supporting surface
14
) and reduce slippage of workpieces supported on the workpiece supporting surface
14
. Standard and Metric measurement indicia
79
preferably are located on opposite sides of the cap member
34
.
Finally, the sawhorse
10
preferably includes one or more foldable cross braces
80
. The cross brace
80
comprises a pair of cooperating, extending arms
82
,
84
that are each pivotally connected at one end to longitudinal edges of the support members
12
,
13
. The extending arms
82
,
84
are connected to each other at a pin connection
86
that allows relative pivotal movement between the extending arms
82
,
84
. In the open working position, the extending arms
82
,
84
are fully extended, forming a straight path between the pivotal connections at each support member
12
,
13
(and defining the maximum pivotal movement of the support members
12
,
13
) that allows a direct, tensionally and relatively compressively rigid transfer of load between the support members
12
,
13
. A flange
88
allows a user to manipulate the extending arms
82
,
84
easily into a fully extended position (where a stop, not shown, prevents the extending arms
82
,
84
from exceeding the fully extended position) and to pull the extending arms
82
,
84
out of the fully extended position when collapsing the sawhorse
10
.
It will be appreciated that numerous modifications to and departures from the embodiments of the invention described above will occur to those having skill in the art. Such further embodiments are deemed to be within the scope of the following claims.
Claims
- 1. A sawhorse, comprising:a base assembly including a pair of support members each formed from a plastic material, said support members being connected to one another for movement between an open working configuration in which the base assembly is self-supporting in an upright position and a closed storage configuration; a workpiece support structure mounted on said base assembly and defining an upwardly facing support surface for supporting a workpiece when the base assembly is in the self-supporting upright position thereof; and an attachment for said base assembly in the form of a tool carrier assembly comprising a flexible carrier sheet, a plurality of tool holding elements affixed to said carrier sheet and a plurality of fasteners fixedly affixing said carrier sheet to one of said pair of support members in a configuration providing access to tools held by said tool holding elements when said base assembly is in the open working configuration thereof, the tool carrier assembly being positioned (a) such that the tool carrier assembly is below the workpiece support surface to allow the support surface to support a workpiece without interference from said tool carrier assembly and (b) such that said tool carrier assembly does not impede movement of the base assembly between said closed storage configuration and said open working configuration.
- 2. A sawhorse as defined in claim 1, wherein said flexible carrier sheet of said tool carrier assembly is constructed of a material comprising at least one of a cloth material, a fabric material, a plastic material, a canvas material, a nylon material and a leather material.
- 3. A sawhorse as defined in claim 1, wherein said plurality of tool holding elements includes a plurality of tool receiving loops.
- 4. A sawhorse as defined in claim 3, wherein said plurality of tool holding elements includes a plurality of tool receiving pockets.
- 5. A sawhorse as defined in claim 1, wherein said flexible carrier sheet is co-extensive with said one support member in at least one dimension thereof.
- 6. A sawhorse as defined in claim 1, wherein said flexible carrier sheet is affixed to said one support member utilizing rivets.
- 7. A sawhorse as defined in claim 1, further comprising a cap member constructed of a plastic material mounted on top of said pair of support members, an upwardly facing surface of said cap member providing said workpiece support surface.
- 8. A sawhorse as defined in claim 7, further comprising a pair of workpiece restraint members, each workpiece restraint member being disposed at a respective opposite end of said workpiece support surface and each workpiece restraint member being movable between (a) a closed position in which each workpiece restraint member is flush with said workpiece support surface and (b) an upright position in which each workpiece restraint member extends upwardly from a respective end of said workpiece support surface, said workpiece restraint members being constructed and arranged in the upright positions thereof to provide opposing vertically extending workpiece restraint surfaces at opposite ends of said workpiece support surface to guide and stabilize a workpiece thereon.
- 9. A sawhorse as defined in claim 8, wherein said workpiece restraint members in the closed positions thereof are disposed in respective recesses formed in said workpiece support surface.
- 10. A sawhorse as defined in claim 1, further comprising a plurality of workpiece supporting structures disposed on said workpiece support surface, each workpiece supporting structure being constructed and arranged to reduce slippage of a workpiece along the workpiece support surface.
- 11. A sawhorse as defined in claim 10, wherein each said workpiece supporting structure is constructed of a rubber material.
- 12. A sawhorse as defined in claim 1, further comprising a plurality of non-skid members disposed on bottom edges of said base assembly, said non-skid members being constructed and arranged to resist sliding of the base assembly along a surface on which the base assembly is supported in the upright position thereof.
- 13. A sawhorse as defined in claim 12, wherein each said non-skid member is comprise of a rubber material.
- 14. A sawhorse as defined in claim 1, wherein each support member of said pair of support members includes two legs and wherein said flexible carrier sheet is fixedly affixed to said legs of said one support member.
- 15. A sawhorse of claim 1, wherein each support member of said pair of support members includes a pair of legs and at least one cross-brace extending between the legs thereof, and wherein said flexible carrier sheet is fixedly affixed to said cross-brace of said one support member.
- 16. A sawhorse as defined in claim 1, further comprising a latch member constructed and arranged to secure the pair of support members in the closed storage configuration thereof.
- 17. A sawhorse as defined in claim 1, further comprising measurement indicia disposed thereon.
- 18. A sawhorse as defined in claim 1, wherein said first and second support members are identical to one another.
US Referenced Citations (29)