Ratchet wrench

Details Ratchet wrench Ratchet wrench

2006-08-01

2006-08-01

Ackun Jr., Jacob K. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S063000

Reexamination Certificate

active

07082861

ABSTRACT:
A ratchet wrench comprises a main body having a hole at an action end; a ratchet having a polygonal groove at its center and a latch hole and a latch groove interconnected to the polygonal groove. The latch hole is disposed at the edge of the polygonal groove, and the latch groove is disposed at the corner of the polygonal groove, and the whole is accommodated in the hole of the main body. A latch ring is installed at the external side of the ratchet with its end bent into a latch end and passed into the latch hole of the ratchet, and the other end is bent into a latch surface to be latched into the latch groove, such that the latch end and the latch surface are slightly protruded from the polygonal groove. If the polygonal groove of the ratchet is sheathed onto an object, two different latch structures are defined between the latch ring and the object.

REFERENCES:
patent: 5857390 (1999-01-01), Whiteford
patent: 6044731 (2000-04-01), Hsieh
patent: 6408722 (2002-06-01), Chen
patent: 6868759 (2005-03-01), Tuan-Mu

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