Method and apparatus for making threaded joints

Details Method and apparatus for making threaded joints Method and apparatus for making threaded joints

1978-09-12

1980-06-24

Combs, Ervin M.

Metal working

Means to assemble or disassemble

By rotation of work part

29407, 73139, 173 12, B25B 2314, G01L 524

Patent

active

042087759

ABSTRACT:
A method and apparatus are provided for making threaded joints, such as pipe joints, within a range of predetermined applied torque and turns values. A pipe or a pipe and a coupling are threaded onto the end of a pipe string. The applied torque is monitored and, when a reference torque is exceeded, the number of turns made is counted. According to a representative aspect of the invention, when either the actual torque or the actual turns are within a predetermined percentage of a predetermined minimum value for that parameter and the other parameter has exceeded a predetermined minimum value, an indication is generated to the operator of the apparatus that he should be ready to stop the joint making operation.

REFERENCES:
patent: 3368396 (1968-02-01), Burkleo et al.
patent: 3606664 (1971-09-01), Weiner
patent: 3745820 (1973-07-01), Weiner
patent: 3962910 (1976-06-01), Spyridakis et al.
patent: 3982419 (1976-09-01), Boys
patent: 4026369 (1977-05-01), Vliet
patent: 4091451 (1978-05-01), Weiner et al.
patent: 4110829 (1978-08-01), Boys

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