Power tong wrench

Details Power tong wrench Power tong wrench

1997-02-18

2000-07-04

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5719, 81 5734, B25B 1700

Patent

active

060822252

ABSTRACT:
A power tong wrench having an open slot to accommodate a range of pipe diameters capable of making and breaking pipe threads and spinning in or out the threads and in which hydraulic power is supplied with a pump disposed within a rotary assembly, which pump is powered through a non-mechanical coupling, preferably magnetic, to a motor disposed outside the rotary assembly.

REFERENCES:
patent: 4649777 (1987-03-01), Buck
patent: 4696206 (1987-09-01), Renfro
patent: 4791838 (1988-12-01), Bickford et al.
patent: 4811635 (1989-03-01), Falgout
patent: 4979356 (1990-12-01), Vatne
patent: 5159860 (1992-11-01), Pietras
patent: 5161438 (1992-11-01), Pietras
patent: 5167173 (1992-12-01), Pietras

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