Polygonal member engaging device

Details Polygonal member engaging device Polygonal member engaging device

2005-11-08

2005-11-08

Meislin, Debra S. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Jaw faces

C081S121100, C081S124300

Reexamination Certificate

active

06962100

ABSTRACT:
A polygonal member engaging device includes a box end and a handle connected to the box end. The box end has a hole for receiving an engaging ring therein which has a plurality of ridges and grooves defined in an inner periphery thereof a clamping hole of the engaging ring. The ridges and the grooves are alternatively arranged from each other in the inner periphery of the clamping hole and each ridge has an enlarged portion extending radially outward therefrom and a width “W1” between two adjacent enlarged portions of the ridges is smaller than a width “L1” of a bottom of each groove.

REFERENCES:
patent: 5295422 (1994-03-01), Chow
patent: 5819606 (1998-10-01), Arnold
patent: 6314840 (2001-11-01), Bozonnet
patent: 6679141 (2004-01-01), Bozonnet
patent: 6745649 (2004-06-01), Liao

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