Wrench device for mine roof bolts

Details Wrench device for mine roof bolts Wrench device for mine roof bolts

1994-06-14

1996-06-18

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

81125, 295271, 294695, B25B 1306

Patent

active

055267203

ABSTRACT:
The present invention is a wrench device for installing a mine roof bolt. The device comprises a body portion having a socket end for holding and turning a nut of the mine roof bolt. There is also a retractable bolt stoppage mechanism engaged through the body portion. The bolt stoppage mechanism when raised prevents the bolt from threading onto the nut during resin mixing so as the nut is turned, the bolt is also turned. In a preferred embodiment, the body portion has a hollow central cavity which extends into the socket. The bolt stoppage mechanism can comprise a head portion and a rod portion slidably engaged within said central cavity. The bolt stoppage mechanism can also comprise a spring for biasing the stop member away from the socket end.

REFERENCES:
patent: 1509680 (1924-09-01), Meek
patent: 2676506 (1954-04-01), Schultz
patent: 4564315 (1986-01-01), Rozanc

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