Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical...
Patent
1984-08-27
1986-03-11
Levy, Stuart S.
Boring or penetrating the earth
With tool drive prime mover or above-ground mechanical...
173163, E21B 302
Patent
active
045748934
ABSTRACT:
A compact power swivel for well drilling rigs and the like, comprising a frame; a mounting bracket secured to the frame; a quill rotatable on an axis mounted to the bracket; a bull gear coaxially disposed on the quill for rotating the quill; a motor mounted to the bracket and including a shaft rotatable on an axis parallel to the quill axis; a spur gear coaxially disposed on the shaft and rotatable, therewith engaging the bull gear for rotating the bull gear and the quill thereby; a disc brake mounted to the bracket and co-operating with the shaft for controlling rotation of the shaft and the quill thereby; and a thrust bearing coaxially disposed on the quill and associated with the bracket, for permitting free rotation of the quill and for distributing to the bracket forces associated with displacement of the swivel.
REFERENCES:
patent: 2215928 (1940-09-01), Hornbrook
patent: 2998084 (1961-08-01), Johnson et al.
patent: 3145786 (1964-08-01), O'Neill et al.
patent: 3157236 (1964-11-01), Arthur
patent: 3670832 (1972-06-01), Striegler
patent: 3736993 (1973-06-01), West
Becker Robert F.
Young Horace J.
Hannon Thomas R.
Levy Stuart S.
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