Tools – Wrench – screwdriver – or driver therefor – Attachment – or including adjunct or replaceable portion
Patent
1982-08-05
1984-12-25
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Attachment, or including adjunct or replaceable portion
81DIG11, 81177N, B25B 1358
Patent
active
044896280
ABSTRACT:
The multisized fastener driving tool includes a plurality of sockets slidably received one within the other. A first or outer most socket (A) includes a plurality of first fastener engaging portions (20, 22, 24) for engaging alternate corners of a fastener driving surface and a plurality of first guideways, one positioned between each of the first fastener engaging portions. A second socket (B) includes a plurality of second fastener engaging portions (50, 52, 54) which are slidably received in the first guideways and are adapted to engage the driving surface of a smaller fastener. A third socket (C) includes a plurality of fastener engaging portions (80, 82, 84) which are slidably received in the second guideways and the first fastener engaging portions for engaging a still smaller fastener. Additional sockets may be provided for accommodating yet smaller fasteners. An end cap (E) is configured to be connected with a ratchet drive or the like. When the driving tool is received on a fastener, the sockets which are too small to engage the fasteners driving surfaces are biased inward against a plurality of springs (F).
REFERENCES:
patent: 1171063 (1916-02-01), Nigborowicz
patent: 1997948 (1935-04-01), Pearson
patent: 2502587 (1950-04-01), Phipps
patent: 2735325 (1956-02-01), Rudd
patent: 2822714 (1958-02-01), Paparelli
patent: 3127797 (1964-04-01), Rogers
patent: 3127798 (1964-04-01), Gol
patent: 3233482 (1966-02-01), Jaehne
patent: 3651720 (1972-03-01), Indyck
Meislin Debra S.
Schmidt Frederick R.
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