One-piece, open-end wrenching head with serrated jaws

Details One-piece, open-end wrenching head with serrated jaws One-piece, open-end wrenching head with serrated jaws

1990-03-05

1992-06-02

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811211, B25B 1302

Patent

active

051177145

ABSTRACT:
The open-end wrenching head includes two jaws and a throat interconnecting the jaws. The jaws include planar jaw driving surfaces each with at least one serrated region thereon constructed and arranged to engage a portion of a selected side of a fastener. The throat may include either an arcuate surface or two planar throat driving surfaces having serrated regions thereon. Each of the serrated regions on the driving surfaces may include symmetrical or asymmetrical grooves. The plane of these grooves may be parallel to the driving surfaces or at an angle of about 1.degree. to 3.degree..

REFERENCES:
patent: 2777348 (1957-01-01), Wraight
patent: 4126063 (1978-11-01), Palmer

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