Tools – Wrench – screwdriver – or driver therefor – Flexible
Patent
1989-03-09
1991-08-20
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Flexible
81 343, B25B 1352
Patent
active
050404393
ABSTRACT:
This application discloses an improvement for a conventional open-end adjustable wrench comprising a recess in the movable jaw of the wrench adapted to receive the first end of a chain. Spring biasing means on the first end of the chain to releasably retain the first end of the chain in the recess and a curved lip on the fixed jaw adapted to receive and retain the opposite second end of the chain are also disclosed. Finally, a ratchet-like motion achieved by the modified wrench is disclosed wherein the work object is engaged in a non-slip manner during the movement of the wrench handle in one direction, and in a slipping manner during the movement of the wrench handle in the opposite direction. The unique refined feature of maximum adjustment provided by the flexible movement of the wrench jaw being repositioned where the knurl is moved allows the full ratchet-like action motion to be applied to the work object.
REFERENCES:
patent: 1290530 (1988-04-01), Evans
patent: 1587892 (1926-06-01), Bessolo
patent: 2000012 (1935-05-01), Cullen
patent: 2784628 (1957-03-01), Meredith
patent: 3613486 (1971-10-01), Chapman
Cruz Lawrence
Schmidt Frederick R.
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