Forcible type C-type clamp with pre-stress packing face

Details Forcible type C-type clamp with pre-stress packing face Forcible type C-type clamp with pre-stress packing face

1990-09-11

1992-02-25

Hartman, J. J.

Work holders

Relatively movable jaws

Means to actuate jaw

269 40, 269 45, B25B 110

Patent

active

050906704

ABSTRACT:
A C-clamp which may be clamped by a second C-clamp, so that large and irregular shaped workpieces may be clamped thereby, and further so that additional strength and stability is provided. The C-clamp includes an internal clamping face that contacts the workpiece during the clamping thereof. The C-clamp further includes a pair of external clamping faces that are contacted and clamped by the second C-clamp. The arm of the C-clamp that has the internal clamping face formed thereon has the external clamping faces substantially aligned therewith, so that vibrations produced by work being done on the workpiece are minimized. The clamp includes clamping heads that automatically pivot and swivel to accommodate the shape and angle of the surface and angle of the surface of the workpiece being clamped therewith.

REFERENCES:
patent: 3854712 (1974-12-01), McGee
patent: 4083624 (1978-04-01), Timmer
patent: 4105344 (1978-08-01), Rousom
patent: 4607829 (1986-08-01), Suska
patent: 4747590 (1988-05-01), Yang

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