Ratchet wheel mounting structure for wrench

Details Ratchet wheel mounting structure for wrench Ratchet wheel mounting structure for wrench

2006-01-03

2006-01-03

Meislin, Debra S (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

Reexamination Certificate

active

06981433

ABSTRACT:
A ratchet wheel mounting structure comprises a ratchet wheel mounted in a box of a wrench body and meshed with a toothed stop block in said box, and a retainer ring mounted in between said box and said ratchet wheel to secure said ratchet wheel to said box, said ratchet wheel having teeth arranged around the periphery thereof, a locating block at one side of the ratchet wheel, and a locating groove being formed around the periphery of said locating block for positioning said retainer ring. Each tooth of said ratchet wheel is chamfered at one end thereof far away from the locating block; and a reinforcing bevel is provided in the valley between roots of another ends of each two adjacent teeth of said ratchet wheel adjacent to said locating block. Or each tooth is chamfered at two ends and thus no bevel slop is formed.

REFERENCES:
patent: 6408722 (2002-06-01), Chen
patent: 6467378 (2002-10-01), Chen

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