Portable power operated pipe wrench

Details Portable power operated pipe wrench Portable power operated pipe wrench

1975-11-10

1976-09-28

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

B25B 1700

Patent

active

039824497

ABSTRACT:
A hollow member having a longitudinally movable yoke pivotally supporting pipe engaging arms. Rearward ends of the arms have roller engagement with a ramp in the body member, and upon powered longitudinal movement of the yoke, the arms are movable between an outer open position for receiving a pipe and an inner position holding the pipe against a toothed drive wheel. The drive wheel is connected by a shaft and gearing to a drive socket arranged to be driven by a conventional impact wrench. Powered operation of the yoke in the longitudinal direction is by a fluid operated cylinder and piston assembly.

REFERENCES:
patent: 2544639 (1951-03-01), Calhoun
patent: 2746329 (1956-05-01), Paget
patent: 3892148 (1975-07-01), Wiley

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