Work holders – Operator supported – Handle manipulation for jaw actuation
Patent
1998-03-16
1999-12-14
Scherbel, David A.
Work holders
Operator supported
Handle manipulation for jaw actuation
269258, 269170, 269196, 269229, 269249, 269143, 81421, B25B 100
Patent
active
060006862
ABSTRACT:
A locking, three-way clamp for applying a bi-directional vector force against one or more workpieces. The clamp 10, of the present invention, includes a handle 22, first and second opposing jaws 24 and 26, respectively, a jaw actuation lever 28, a threaded adjusting screw 30 and a toggle lock 32. Second opposing jaw 26 pivots, in relation to first jaw 24, about a central pivot point 34. First and second opposing jaws 24 and 26 each include a distal end 25 and 27, respectively. A workpiece restraint member 36 can be utilized for providing a rigid planar surface for engagement with a workpiece. The locking three-way clamp 10 of the present invention also includes an engagement device 50, on the distal end of each jaw, that pivots inward towards the restraint member 36 thus applying a vector force having x- and y-component vectors that forces a first workpiece against a second workpiece and simultaneously forcing the clamp 10 towards the workpieces 120 and 140. In one embodiment, the engagement devices are defined by a opposing, eccentrically mounted cams 60 pivotally secured proximate the distal ends 25 and 27 of the jaws 24 and 26. In a second embodiment, the engagement device 50' is defined by a linkage assembly 70 pivotally secured proximate the distal ends 25 and 27 of the jaws 24 and 26 of the clamp 10'. Each linkage assembly 70 pivots in relation to distal ends of the jaws about a first pivot point 74 and includes a workhead 52' that pivots in relation to linkage assembly 70 about a second pivot point 76.
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patent: 3807718 (1974-04-01), Sendoykas
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patent: 4673174 (1987-06-01), Tabbert
patent: 4747588 (1988-05-01), Dillhoff
patent: 4795141 (1989-01-01), Mulvaney
patent: 5143359 (1992-09-01), Bush
patent: 5863033 (1999-01-01), Bradford
Scherbel David A.
Wilson Lee
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