Power tong apparatus

Details Power tong apparatus Power tong apparatus

E - Fixed Constructions

21

B

166/60, 255/14.7

E21B 19/16 (2006.01) B23P 19/06 (2006.01) E21B 19/10 (2006.01)

Patent

CA 1074778

POWER TONG APPARATUS Abstract Apparatus for control of a power tong for imparting torque to a tubular member to make a threaded connection with another member, torque being sensed by means such as a strain gauge and torque transducer. Cams are provided to coact with the throttle or motor valve lever of the power tong and are disengage- able to allow the throttle or valve lever to move to an idle or neutral position when torque being imparted to the tubular member reaches a predetermined amount.

312260

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