Wrench assembly for use with mine wall support bolts

Details Wrench assembly for use with mine wall support bolts Wrench assembly for use with mine wall support bolts

1983-12-27

1985-07-23

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

8117785, B25B 1300

Patent

active

045302618

ABSTRACT:
A wrench for use with mine wall support bolts is disclosed. The wrench includes an elongated shaft shaped to be engaged and driven by a mine bolting machine. The shaft is coupled to a bolt socket by a universal joint. A removable, resilient, impermeable sleeve surrounds the universal joint. The sleeve is formed of a non-metallic material having physical properties which limit the movement of the universal joint and also seal the joint against infusion of solid and fluid matter. The sleeve is secured in place by a removable clamp.

REFERENCES:
patent: 743346 (1903-11-01), Swain
patent: 1487295 (1924-03-01), Throwbridge
patent: 2325211 (1943-07-01), Abbe
patent: 2722812 (1955-11-01), Golasky
patent: 2775912 (1957-01-01), Skage
patent: 2964980 (1960-12-01), Riley et al.

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