Disposable battery powered screw driver, locking mechanism,...

Details Disposable battery powered screw driver, locking mechanism,... Disposable battery powered screw driver, locking mechanism,...

2007-03-06

2007-03-06

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

C081S429000, C081S469000

Reexamination Certificate

active

11006977

ABSTRACT:
In accordance with one embodiment of the present invention, a driver may include an electric motor coupled to a bit interface. The bit interface may include a generally cylindrical body having first and second hollow portions. The first hollow portion may be on one end of the generally cylindrical body and may define a generally cylindrical hole. The second hollow portion may abut the first hollow portion and define an oblong channel. The oblong channel may be further defined by first and second parallel flat walls. The cylindrical body may also include a first transverse groove.

REFERENCES:
patent: 4154308 (1979-05-01), Goldsberry et al.
patent: 4875612 (1989-10-01), Lee
patent: 4878404 (1989-11-01), Liao
patent: 5643533 (1997-07-01), Fishman
patent: 5690577 (1997-11-01), Enzmann et al.
patent: 5881613 (1999-03-01), Han
patent: 6329778 (2001-12-01), Culp et al.
patent: D474086 (2003-05-01), Heun
patent: 6592040 (2003-07-01), Barkan et al.
patent: D487383 (2004-03-01), Ng

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