Screwdriver

Details Screwdriver Screwdriver

1984-11-21

1986-05-27

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81 28, 81450, B25B 2300

Patent

active

045908249

ABSTRACT:
A reversible bladed screwdriver comprising a slotted hollow handle and a pivotally attached reversible screwdriver blade capable of being reversed when in a fully extended position, being held in a conventional colinear position when retracted and being held at an oblique angle to the handle for maximum application of torque when in a semi-extended position. Such a screwdriver is particularly useful for one handed application of torque.

REFERENCES:
patent: 161056 (1875-03-01), Patterson
patent: 750182 (1904-01-01), Furbish
patent: 1010631 (1911-12-01), Holmquist
patent: 1552361 (1925-09-01), Trombley
patent: 1616300 (1927-02-01), Bido
patent: 1695949 (1928-12-01), Borklund
patent: 2656865 (1953-10-01), Bright
patent: 3013594 (1961-12-01), Nehls

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