Driving shaft for a ratchet spanner

Details Driving shaft for a ratchet spanner Driving shaft for a ratchet spanner

2005-11-22

2005-11-22

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S438000

Reexamination Certificate

active

06966239

ABSTRACT:
A driving shaft for a ratchet spanner includes a shaft body and a sleeve-retaining member. The shaft body includes a polygonal driving end that is adapted to be received fittingly within a wrench sleeve and that has an end surface with a polygonal screwdriver-engaging groove adapted for receiving a head of a screwdriver fittingly, and an annular outer surface that is formed with a hole communicated with the screwdriver-engaging groove in the end surface. A sleeve-retaining member is disposed within the screwdriver-engaging groove in the shaft body, and has an integral projection that extends through the hole in the shaft body and that is adapted to be biased to press against the wrench sleeve so as to retain the wrench sleeve on the driving end of the shaft body.

REFERENCES:
patent: 4722252 (1988-02-01), Fulcher et al.
patent: 4987802 (1991-01-01), Chern
patent: 5042333 (1991-08-01), Huang
patent: 5481949 (1996-01-01), Yen
patent: 5967002 (1999-10-01), Pijanowski
patent: 6189419 (2001-02-01), Pijanowski
patent: 6705183 (2004-03-01), Dickens

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