Ratchet wrench

Details Ratchet wrench Ratchet wrench

2006-06-20

2006-06-20

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S062000, C081S063200

Reexamination Certificate

active

07062994

ABSTRACT:
Ratchet wrench has its head comprising an opening, a recess on a wall of the opening, a channel having one end open to the recess and the other blind end in the handle, and a trough on the handle proximate the wrench head, a reversing pawl in the recess and including a top groove and a rear cavity, a push button on the trough adapted to move between first and second positions by cooperating with a spring depressible detent for carrying out clockwise driving and counterclockwise ratcheting or vice versa, a reversing lever having one portion disposed on the groove and the other portion received in a slot of the push button, a spring biaser including one end in the cavity and the other end in the blind end of the channel, and a socket fastened in the opening and being meshed with pawl teeth of the reversing pawl.

REFERENCES:
patent: 6435063 (2002-08-01), Chen
patent: 6516691 (2003-02-01), Wei
patent: 6886428 (2005-05-01), Hsien
patent: 6945141 (2005-09-01), Hu
patent: 2003/0070512 (2003-04-01), Hu

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