Adjustable compound-action clamp

Details Adjustable compound-action clamp Adjustable compound-action clamp

1989-05-24

1990-11-06

Focarino, Margaret A.

Handling: hand and hoist-line implements

Hand bars and hand barrows

Opposing jaws

24509, A44B 2100

Patent

active

049680781

ABSTRACT:
An adjustable compound-action spring clamp for enabling the application of an adjustable force to a workpiece, while insuring that in operation only a slight increase of hand gripping force is required for substantially opening the jaw portions compared with the hand gripping force required initially to separate the jaw portions.

REFERENCES:
patent: 1350675 (1920-08-01), Smith
patent: 2357104 (1944-08-01), Grinnell
patent: 2493949 (1950-01-01), Donahue
patent: 2504152 (1950-04-01), Riker et al.
patent: 3328066 (1967-06-01), Johnson
patent: 3446525 (1969-05-01), Jones
patent: 4175306 (1979-11-01), Bigelow et al.

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