Power torque wrench tool

Details Power torque wrench tool Power torque wrench tool

1983-05-11

1985-09-03

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 573, B25B 1700

Patent

active

045384843

ABSTRACT:
A power torque wrench tool for applying tension to trusses of the type used in coal mines, consisting of a pair of parallel rods with their adjacent end portions passing through parallel apertures in a truss rod attaching block and threaded at their ends to permit nuts to be attached to their respective ends at opposite ends of the attaching block for holding the truss rods in tensile relationship with each other at a predetermined tension, comprises an elongated body having a notch at one end to receive the rod adjacent to that on which a nut is to be tightened, a nut receiving socket rotatably journaled in the housing, a rotary hydraulic motor with its rotor rotatably journaled in the housing and operatively connected to the wrench to rotate the same, a pair of handles projecting downwardly from the bottom of the housing and an upwardly inclined extension on the side of the housing remote from the alignment notch for reacting engagement with the roof of the mine during operation of the device, the socket extending entirely through the body of the tool to permit the passage through the tool of the truss rod mounting the nut.

REFERENCES:
patent: 2366859 (1945-01-01), Koza
patent: 2825252 (1958-03-01), Roberts
patent: 3668949 (1972-06-01), Walker
patent: 3709072 (1973-01-01), Rogers
patent: 4098151 (1978-07-01), Bliss
patent: 4179955 (1979-12-01), Akiyoshi et al.

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