Work holders – Relatively movable jaws – Means to actuate jaw
Patent
1980-05-21
1982-06-22
Watson, Robert C.
Work holders
Relatively movable jaws
Means to actuate jaw
269274, 269275, B25B 114
Patent
active
043358730
ABSTRACT:
A toggle clamp has a bolt carried by a swinging clamping arm for generally axially and limited arcuate movement in a clamping operation against a workpiece. The clamping end of the bolt is removably secured within a socket in a polyurethane work engaging bumper and seated against the socket base. By virtue of the physical characteristics of the polyurethane and interference fit between the bolt and the socket wall throughout an appreciable axial extent, the assembled bolt and bumper are capable of withstanding the axial and radial forces of repeated clamping operations and outwearing comparable assemblies available heretofore without recourse to a chemical bond between the bolt and bumper or an enlarged force distributing bolt head as has been required heretofore.
REFERENCES:
patent: 789906 (1905-05-01), Gordon
patent: 2602641 (1952-07-01), Wade
patent: 2744283 (1956-05-01), Reineman
patent: 2865133 (1958-12-01), Hoven et al.
patent: 2974984 (1961-03-01), Koch
patent: 2985469 (1961-05-01), Bowman
patent: 3213524 (1965-10-01), Prather et al.
patent: 3284258 (1966-11-01), Patti et al.
patent: 3322423 (1967-05-01), Popow et al.
patent: 3872760 (1975-03-01), Desnoyers
C. J. Edwards Company
Taylor Jay C.
Waldrop Neal A.
Watson Robert C.
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