Wrench adaptor for driving screw driver bits

Details Wrench adaptor for driving screw driver bits Wrench adaptor for driving screw driver bits

2005-11-29

2005-11-29

Hail, III, Joseph J. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

C081S063200, C081S176100

Reexamination Certificate

active

06968758

ABSTRACT:
An adaptor device is developed for attaching to a wrench and for being driven by the wrench, the adaptor device includes an extension for attaching to the wrench, a shank extended from the extension and having an engaging hole to receive a tool member, the shank includes one or more slots to form one or more blades and to retain various tool members in the engaging hole of the shank. A ferrule includes a bore to receive the shank and includes an inclined surface to engage with the blade and to force the blade to engage with and to force against the tool member, or to release the blade from the tool member.

REFERENCES:
patent: 3253626 (1966-05-01), Stillwagon Jr. et al.
patent: 6006631 (1999-12-01), Miner et al.
patent: 6019019 (2000-02-01), Hobbs
patent: 6257096 (2001-07-01), Ling
patent: 6601476 (2003-08-01), Hu
patent: 6647831 (2003-11-01), Hu
patent: 6868758 (2005-03-01), Chen

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