Drive extension wrench

Details Drive extension wrench Drive extension wrench

2008-03-24

2010-11-09

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

Reexamination Certificate

active

07827885

ABSTRACT:
An driver extension wrench having a pair of elongate housing members with openings at opposing ends of the housing members, with a plurality of interior posts at a predetermine spacing. The openings have sockets with exterior gear teeth. Gears are mounted on each of the posts and cooperate with each other and the sockets so that rotational force applied to the first opening is transmitted through the gears to the second opening to be applied to a fastener.

REFERENCES:
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patent: 1378719 (1921-05-01), Poole
patent: 2830479 (1958-04-01), Finn
patent: 3987691 (1976-10-01), Savage
patent: 4063475 (1977-12-01), Perkins
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patent: 4374480 (1983-02-01), Diaz
patent: 4735118 (1988-04-01), Broemel, Jr.
patent: 4825729 (1989-05-01), Puncochar
patent: D313731 (1991-01-01), Crawford
patent: 5458603 (1995-10-01), Futch, Sr.
patent: 5732605 (1998-03-01), Mann
patent: 6647830 (2003-11-01), Marquardt
patent: 6832531 (2004-12-01), Marquardt
patent: 6923094 (2005-08-01), Marquardt
patent: 6945139 (2005-09-01), Johnson

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