Selective one-way wrench

Details Selective one-way wrench Selective one-way wrench

2007-01-23

2007-01-23

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S063200

Reexamination Certificate

active

11225464

ABSTRACT:
There is disclosed a selective one-way wrench with a device for retaining a socket. The selective one-way wrench includes a handle and a head formed at an end of the handle. The retaining device includes a cover installed on the head. Two parallel grooves are defined in the internal side of the cover. A stop is formed between the grooves. A shackle is put between the cover and the head. The shackle includes two slides sliding in the grooves. The shackle defines an opening larger than the socket. The shackle includes a retaining portion at a front end. An arched leaf spring is compressed between the shackle and the stop. Thus, the shackle is normally at a locking position and will be returned to the locking position after it is moved and released. Because of the above-mentioned design, the socket can easily be retained and released. As the slides slide in the grooves, the operation of the retaining device is smooth. Therefore, its lifecycle is long.

REFERENCES:
patent: 6408722 (2002-06-01), Chen
patent: 6655237 (2003-12-01), Chen
patent: 6752046 (2004-06-01), Lee
patent: 6807881 (2004-10-01), Wu
patent: 6948406 (2005-09-01), Li
patent: 6955104 (2005-10-01), Hu
patent: 2004/0016322 (2004-01-01), Hu
patent: 2005/0241443 (2005-11-01), Chen

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