Apparatus for making and breaking screw couplings

Details Apparatus for making and breaking screw couplings Apparatus for making and breaking screw couplings

1983-08-11

1985-02-05

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5716, B25B 1700

Patent

active

044972245

ABSTRACT:
Apparatus for making and breaking screw couplings between pipe members of pipe and drilling strings, includes a rotatable chuck (9) and a fixed chuck (17), the rotatable chuck being provided with a fluid reservoir (111) which maintains the pressure in the pressure-fluid-actuated chuck so that continuous rotary movement of the chuck by a torque-producer (100) is possible for the complete screwing or unscrewing of the coupling.

REFERENCES:
patent: 3256757 (1966-06-01), Kochaver
patent: 4092881 (1978-06-01), Jurgens et al.
patent: 4445402 (1984-05-01), Farr et al.

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