Power tong apparatus

Details Power tong apparatus Power tong apparatus

1977-09-29

1978-11-14

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

73139, B25B 1350

Patent

active

041250400

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 disengageable 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.

REFERENCES:
patent: 3368396 (1968-02-01), Van Burkleo et al.
patent: 3596718 (1971-08-01), Fish
patent: 3606664 (1971-09-01), Weiner
patent: 3693727 (1972-09-01), Bell
patent: 3745820 (1973-07-01), Weiner

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