Drill pipe handling mechanism

Details Drill pipe handling mechanism Drill pipe handling mechanism

1996-12-10

1998-08-11

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5719, 81 572, 81 5735, B25B 1350

Patent

active

057912068

ABSTRACT:
A breakout wrench for making and breaking joints between successive drill pipe in a drill string on a drilling rig includes a swing arm pivotable between a storage and a pipe gripping position. The swing arm carries a first and second pipe gripping jaw, the first jaw movable relative to the swing arm, and the second jaw movable relative to the first jaw. Both jaws are freely movable, to a slight degree, in all directions in the plane of their movement, to permit self-adjustment of position to the wrench relative to a drill pipe centerline. A double-rod hydraulic cylinder actuates both jaws.

REFERENCES:
patent: 2746329 (1956-04-01), Paget
patent: 3500708 (1970-03-01), Wilson
patent: 3680412 (1972-08-01), Mayer et al.
patent: 3832918 (1974-09-01), Lang et al.
patent: 4128135 (1978-12-01), Mitchhart et al.
patent: 4194419 (1980-03-01), Mitchhart et al.
patent: 4576067 (1986-03-01), Buck
patent: 5537900 (1996-07-01), Schaar

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