Bearing structure for downhole motors

Details Bearing structure for downhole motors Bearing structure for downhole motors

1986-09-03

1988-01-19

Werner, David

Bearings

Rotary bearing

Plain bearing

384420, 384912, 175107, F16C 1710, E21B 402

Patent

active

047201991

ABSTRACT:
A unitary sleeve mounts both thrust and radial bearings, the radial bearing being fabricated of macro-crystalline tungsten carbide powder and cemented tungsten carbide cobalt chips in a recessed area on an elongated extension and the thrust bearing comprising a ring carrying diamond inserts residing in through holes, the ring and inserts being brazed on a hub at the thrust head end of the extension.

REFERENCES:
patent: T102901 (1983-04-01), Offenbacher
patent: 2331584 (1943-10-01), Underwood
patent: 3127224 (1964-03-01), Owens et al.
patent: 4017480 (1977-04-01), Baum
patent: 4146080 (1979-03-01), Baum
patent: 4410054 (1983-10-01), Nagel et al.
patent: 4451162 (1984-05-01), Shepherd
patent: 4468138 (1984-08-01), Nagel
patent: 4549820 (1985-10-01), Mullins
patent: 4560014 (1985-12-01), Geczy
patent: 4620601 (1986-11-01), Nagel

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