Positioning device for a two-way ratchet tool

Details Positioning device for a two-way ratchet tool Positioning device for a two-way ratchet tool

2007-01-16

2007-01-16

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S063000

Reexamination Certificate

active

11458434

ABSTRACT:
A positioning device for a two-way ratchet tool includes a switch assembly, a lid, a ratchet, a detent and a wrench body. The switch assembly comprises a switch and a stud to be inserted in a through slot of the lid. The stud is provided with an engaging block to link the detent. The ratchet comprises a through hole therein and gear teeth around its outer periphery. The detent is formed with gear teeth. The ratchet and the detent are accommodated in the wrench body. A first elastic element is provided in the wrench body to engage with the detent so that the gear teeth of the detent mesh with the gear teeth of the ratchet. A second elastic element is provided in the wrench body to engage with the switch of the switch assembly.

REFERENCES:
patent: 6386072 (2002-05-01), Yuan-Chin et al.
patent: 6408722 (2002-06-01), Chen
patent: 6457387 (2002-10-01), Hu
patent: 6568299 (2003-05-01), Hu
patent: 6789449 (2004-09-01), Liu
patent: 7017453 (2006-03-01), Hu
patent: 7082861 (2006-08-01), Chen
patent: 7096763 (2006-08-01), Hsieh
patent: 2003/0177872 (2003-09-01), Shu-Ying et al.
patent: 2006/0090609 (2006-05-01), Chang

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