Wrench with overcenter linkage

Details Wrench with overcenter linkage Wrench with overcenter linkage

1982-09-29

1984-10-23

Schmidt, Frederick R.

Tools

Tool jaw

Jaw-actuating means

81369, 81372, 81373, 81126, B25B 1326, B25B 712

Patent

active

044781148

ABSTRACT:
A wrench is formed of two jaws which are shaped to conform to standard fasteners, such as hex nuts, and are supported within a housing for translation relative to each other for gripping the fastener. Closing force on the jaws is exerted by a pivoting handle acting through an overcenter linkage. A crank-shaped lever is positioned contiguous to the overcenter linkage permits operation of the wrench with the jaws being either tightly clenched or slightly withdrawn from the fastener. One end of the overcenter linkage is connected to the housing by a screw which is rotated to set a spacing between the jaws.

REFERENCES:
patent: 952074 (1910-03-01), McIntire
patent: 2280005 (1942-04-01), Petersen
patent: 2428949 (1947-10-01), Ward et al.
patent: 2496308 (1950-02-01), Pugh et al.
patent: 2514130 (1950-07-01), Jones
patent: 2589511 (1952-03-01), Redmon
patent: 3564956 (1971-02-01), Landen
patent: 4174646 (1979-11-01), Kotler
patent: 4300415 (1951-11-01), Saila

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