Screwdriver with replaceable blade

Details Screwdriver with replaceable blade Screwdriver with replaceable blade

1981-02-09

1983-09-20

Parker, Roscoe V.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81439, 81177G, 145 61L, 279 79, 279102, B25B 1502

Patent

active

044048742

ABSTRACT:
A screwdriver with replaceable blade is inserted in the longitudinal direction of the handle from one end in non-rotatable complementary manner into an opening having a non-round cross section with which there is associated a spring for holding the blade by friction. The opening is formed from a socket which is of polygonal shape on an inside and an outside thereof and a part (x) of the length thereof is held in non-rotatable complementary manner within the handle while the remaining length (y) thereof projects beyond an end surface of the handle said socket being formed on an inner wall thereof with an annular groove, and a spring of ring shape is disposed partly in the groove.

REFERENCES:
patent: 1475136 (1923-11-01), Olson
patent: 1888222 (1932-11-01), Curtis et al.
patent: 1961246 (1934-06-01), Powers
patent: 2089121 (1937-08-01), Hartung
patent: 2596594 (1952-05-01), Petre
patent: 2833548 (1958-05-01), Clark
patent: 3375860 (1968-04-01), Vosbikian et al.
patent: 4096896 (1978-06-01), Engel

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