Screw driver with retractable lever attachment

Details Screw driver with retractable lever attachment Screw driver with retractable lever attachment

1979-02-12

1980-04-08

Simpson, Othell M.

Bridges

B25G 100, B25G 112

Patent

active

041967615

ABSTRACT:
A screw driver with a retractable lever member, said lever member being adapted, when moved to its extended position, to yield increased leverage for the user so as to improve the turning movement in the process of either tightening or loosening a screw or other similar object.

REFERENCES:
patent: D142982 (1945-11-01), Bloomfield
patent: 244309 (1881-07-01), Rhodes
patent: 1530905 (1925-03-01), Nance
patent: 1559097 (1925-10-01), Hill
patent: 3863693 (1975-02-01), Carriker
patent: 4000767 (1977-01-01), Geng

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