Diamond bearing assembly

Details Diamond bearing assembly Diamond bearing assembly

1993-10-28

1994-11-15

Footland, Lenard A.

Bearings

Rotary bearing

Plain bearing

3849071, 384317, 384304, F16C 1704

Patent

active

053641922

ABSTRACT:
The invention concerns a diamond thrust bearing assembly for a downhole motor. The assembly (10) includes at least one set of opposing bearing rings (20, 22), each of which has an annular support element (24, 30) and a plurality of PCD compacts (48, 62) carried in circumferentially spaced relationship by the support element. The PCD compacts present opposing bearing surfaces (52, 66) with the bearing surfaces (66) of the compacts of one bearing ring in each set being circumferentially longer than the bearing surfaces (52) of the compacts of the other bearing ring of the set.

REFERENCES:
patent: 4410054 (1983-10-01), Nagel et al.
patent: 4468138 (1984-08-01), Nagel
patent: 4560014 (1985-12-01), Geczy
patent: 4620601 (1986-11-01), Nagel
patent: 4662348 (1987-05-01), Hall et al.
patent: 4708496 (1987-11-01), McPherson
patent: 4729440 (1988-03-01), Hall
patent: 4802539 (1989-02-01), Hall
patent: 5092687 (1992-03-01), Hall

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