Portable work bench

Details Portable work bench Portable work bench

2003-05-30

2004-06-15

Ostrager, Allen (Department: 3725)

Woodworking

Workbench

Of special shape or structure

C144S287000

Reexamination Certificate

active

06748987

ABSTRACT:

FIELD OF THE INVENTION
This invention relates generally to work benches and more particularly to a portable work bench that can support a power tool and a workpiece.
BACKGROUND OF THE INVENTION
It is common in the construction industry for users to bring their power tools to the work site. Thus, the users require a work surface at the work site to support the power tools for use. Preferably the work surface is at a certain height so that the user can comfortably use the power tool. In addition, the work surface should also be sufficiently portable to be easily moved around a work site.
In the past, users have disposed their power tools on sheets of wood which are in turn supported by two or more sawhorses. This arrangement, however, lacks the strength for efficient operation, as well as being difficult to move around the work site.
Accordingly, different support stands or work benches have been proposed in order to provide a portable work surface that can support a power tool. Some of these prior art solutions have been described in U.S. Pat. Nos. 1,864,840, 4,860,807, 4,874,025, 4,974,651, 5,193,598, and 5,421,231. However, these prior art solutions do not provide a platform supporting the power tool which can be moved horizontally so that the power tool can be moved without moving the workpiece.
Other prior art solutions, such as the one described in U.S. Pat. No. 5,592,981, provide a platform supporting the power tool which can be moved horizontally so that the power tool can be moved without moving the workpiece. However, they require that the user insert and slide the platform from the end of the workbench towards the desired position on the workbench.
SUMMARY OF THE INVENTION
In accordance with the present invention, an improved portable work bench is employed. The portable work bench includes a structural body, and a platform disposed on and frictionally contacting the structural body. In addition, the platform includes an override mechanism for allowing horizontal movement of the platform along the structural body. Further, the portable work bench may include a plurality of legs for supporting the structural body. The structural body may be tubular and preferably has a trapezoidal cross-section.
Such work bench can be used by disposing the platform on the structural body, so that the platform frictionally contacts the structural body. Then the user can mechanically override the static friction between the platform and the structural body and move the platform horizontally along the structural body.
Another embodiment of the present invention discloses a portable work bench, which includes a structural body, and a platform disposed on the structural body. In addition, the platform includes a cam mechanism for locking the position of the platform along the structural body. Further, the portable work bench may include a plurality of legs for supporting the structural body. The structural body may be tubular and preferably has a square cross-section.
Additional features and benefits of the present invention are described, and will be apparent from, the accompanying drawings and the detailed description below.


REFERENCES:
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patent: 5988243 (1999-11-01), Ayala et al.
patent: 6199608 (2001-03-01), Ayala et al.
patent: 6415831 (2002-07-01), Ayala et al.
patent: 6595251 (2003-07-01), Ayala et al.

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