Dual-string tubing tong and method

Details Dual-string tubing tong and method Dual-string tubing tong and method

1984-10-09

1986-05-27

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5715, 81 5718, 81 5719, 81 5721, 81 573, 81 5733, B25B 2100

Patent

active

045908230

ABSTRACT:
An improved power tong is provided of the type having a open throat portion for laterally moving the tong on and off a string of tubing. A ring member is rotatably guided by upper, lower, and intermediate bearings, and a cage plate assembly is partially disposed within the ring member. The rotatable cage plate is adapted for gripping engagement with a first string of tubing. An opening is provided between an outermost surface of the cage plate and ring assembly and an inner surface of a door for receiving a second string of tubing. According to the method of the invention, the first string of tubing is made up by rotating the ring member and cage plate assembly while the second string of tubing is housed within the body of the tong.

REFERENCES:
patent: Re31699 (1984-10-01), Eckel
patent: 3703111 (1972-11-01), Guier
patent: 4246809 (1981-01-01), Keast et al.
patent: 4357843 (1982-11-01), Peck et al.

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