Openable and closable box wrench

Details Openable and closable box wrench Openable and closable box wrench

1990-12-28

1992-07-21

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Pivoted side jaw

811243, 811246, 811247, 81DIG8, B25B 1328

Patent

active

051313006

ABSTRACT:
A wrench is disclosed having hinged jaws which may be opened to be placed about an obstructed bolt, ferrule or other threaded connector. Once placed about the connector the jaws of the wrench are closed to provide contact between the interior flats of the wrench and the corresponding flats of the connector. Complemental elements moveable in parallel planes orthogonal to the jaws pivot axis and drive axis project from respective jaws and provide a means for engaging a torque-applying tool. Upon closure of the wrench jaws and elements are brought into register to permit attachment of the tool and thereby lock the hinged jaws of the wrench together.

REFERENCES:
patent: 1411970 (1922-04-01), Ligon
patent: 2522428 (1950-09-01), Brunstad
patent: 2656750 (1953-10-01), Rasco
patent: 2727418 (1955-12-01), Moon
patent: 3008363 (1961-11-01), Cook
patent: 3741047 (1973-06-01), Kanowsky
patent: 4130032 (1978-12-01), Giandomenico et al.
patent: 4688454 (1987-08-01), Scull
patent: 4774862 (1988-10-01), Scull

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