Hexagonal wrench

Details Hexagonal wrench Hexagonal wrench

1992-02-03

1992-08-25

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81436, B25B 1500

Patent

active

051408775

ABSTRACT:
A hexagonal wrench is provided with three equally spaced grooves of varying depth adjacent an end of the wrench to define three flat side ball-shaped members, the end ball of which is adapted to be inserted in a complementary hexagonal socket of a screw-threaded member. The grooves vary successively in depth with the groove furthest from the end being the shallowest groove so as to provide increased resistance to breakage. A modified hexagonal wrench is comprised of a stub shank of hexagonal cross-sectional configuration secured to an end of a flat elongated strip to facilitate operation of the wrench in areas of small clearance.

REFERENCES:
patent: 2323018 (1943-06-01), DeVellier
patent: 2605665 (1952-08-01), Grenat
patent: 2643566 (1953-06-01), Dos Santos et al.
patent: 2662437 (1953-12-01), Reynolds
patent: 3376768 (1968-04-01), Fortunato
patent: 4246811 (1981-01-01), Bondhus et al.
patent: 4566357 (1986-01-01), Carossino
patent: 4817475 (1989-04-01), kelly et al.
patent: 4819521 (1989-04-01), Lang

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