Wrenching tool applicable to various sizes of threaded members

Details Wrenching tool applicable to various sizes of threaded members Wrenching tool applicable to various sizes of threaded members

2009-07-14

2011-11-15

Shakeri, Hadi (Department: 3727)

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

C081S124400

Reexamination Certificate

active

08056449

ABSTRACT:
The present invention provides a wrenching tool having a polygonal fitting hole formed of a first equilateral polygonal hole and a second equilateral polygonal hole with the same configuration. The two polygonal holes are concentrically arranged to provide two fitting positions for fitting to threaded members. The first polygonal hole has multiple first internal angles each having two sides. A first small internal angle is further disposed on one side of each first internal angle of at least the first polygonal hole. The first small internal angles provide another fitting position for fitting to another size of threaded member. Accordingly, the wrenching tool is applicable to various sizes of threaded members.

REFERENCES:
patent: 4100824 (1978-07-01), Marschke
patent: 4646594 (1987-03-01), Tien
patent: 5388486 (1995-02-01), Ruzicka et al.
patent: 5595096 (1997-01-01), Coffman
patent: 5832792 (1998-11-01), Hsieh
patent: D524615 (2006-07-01), Albertson

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