Power tong and jaw apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Feb 25, 1986
Issued Date -
N/A
app pub date -
Apr 2, 1985
filing date -
Dec 11, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power tong unit is shown which is operable as a closed head or open head unit. The jaws of the tong unit are rotatable to an extended pipe gripping position from either of opposite directions to make-up or break-out pipe from a single retracted position. An improved jaw for use in the tong unit has contoured gripping surfaces for gripping a wider variety of pipe diameters.
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Cited Art Landscape
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