Hand tool with replaceable and rotatable function head

Details Hand tool with replaceable and rotatable function head Hand tool with replaceable and rotatable function head

2007-04-17

2007-04-17

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S423000

Reexamination Certificate

active

11228404

ABSTRACT:
A hand tool includes a handle having a connection end which includes a receiving recess defined axially therein. A function head has an insertion which is removably inserted into the receiving recess and rotatable about a longitudinal axis of the connection end. A positioning device is located between the insertion and an inner periphery of the receiving recess to prevent the function head from dropping from the receiving recess axially. The function heads can be easily replaceable as needed.

REFERENCES:
patent: 1456290 (1923-05-01), Tell
patent: 2680985 (1954-06-01), Fish
patent: 2832246 (1958-04-01), Livermont
patent: 5884540 (1999-03-01), Mo
patent: 6186033 (2001-02-01), Faro, Sr.
patent: D442041 (2001-05-01), Chen
patent: 6408723 (2002-06-01), Zurbuchen
patent: 6732617 (2004-05-01), Steinweg et al.
patent: 6883402 (2005-04-01), Cerda
patent: 6971292 (2005-12-01), Hu
patent: 2003/0217622 (2003-11-01), Steinweg et al.
patent: 2004/0060398 (2004-04-01), Hsien

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