Work holders – Relatively movable jaws – Jaw features
Patent
1988-07-13
1990-11-13
Hartman, J. J.
Work holders
Relatively movable jaws
Jaw features
269258, 269265, B25B 124
Patent
active
049696386
ABSTRACT:
A clamping apparatus having a pair of vise jaws. A pair of concave recesses are formed laterally of each other in the face of the vise jaw. Each concave recess has a base with an arcuate groove therein. A semi-circular clamping member is disposed in each concave recess. The clamping member has a convex surface complementary to the concave recess. The clamping member further has an arcuate rib thereabout which is complementary to the arcuate groove in the clamping member. The upper surface of the clamping member has a semi-circular boss thereon which forms a step-like relationship to the upper surface. A pair of retaining covers are disposed on the upper surface of the jaw and extend over the clamping member so as to abut the semi-circular boss. The retaining cover secures the clamping member to the jaw and also prevents processing chips from falling between the concave recess in the jaw and the convex surface of the clamping member. The clamping members are pivotally mounted in the concave recess and may swivel therein. In an alternate embodiment, the upper .surface of the clamping member is dovetailed downwardly, sloping from the convex surface to the base of the semi-circular boss. The retaining cover has a protruding sloping lip such that when the retaining cover is disposed on the upper surface of the vise jaw, the sloping lip is complementary to the sloping surface of the clamping member.
REFERENCES:
patent: 4632375 (1986-12-01), Yang
patent: 4717132 (1988-01-01), Yang
patent: 4732373 (1988-03-01), Yang
patent: 4767110 (1988-08-01), Yang
Bloom Leonard
Hartman J. J.
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