Open-end wrench with reduced size jaws

Details Open-end wrench with reduced size jaws Open-end wrench with reduced size jaws

1990-10-29

1991-12-24

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811211, B25B 1302

Patent

active

050741713

ABSTRACT:
The one-piece, open-end wrenching head includes two substantially equal-length jaws with a throat recess therebetween. The jaws respectively include driving surfaces spaced apart a distance slightly greater than the across-flats dimension of an associated hexagonal fastener, with each driving surface having a length no greater than the length of one of the flat sides of the associated fastener and having a serrated region thereon. The distance from the deepest part of the throat to an imaginary line connecting the distal ends of the jaws is approximately 0.86 times the across-flats dimension of the fastener.

REFERENCES:
patent: 1424676 (1922-08-01), Parsons
patent: 2657603 (1953-11-01), Evans
patent: 2687056 (1954-08-01), Foor
patent: 2777348 (1957-01-01), Wraight
patent: 3121356 (1964-02-01), Davis
patent: 3242775 (1966-03-01), Hinkle
U.S. application Ser. No. 487,921 filed Mar. 5, 1990.

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