Journal and pilot bearings with alternating surface areas of wea

Details Journal and pilot bearings with alternating surface areas of wea Journal and pilot bearings with alternating surface areas of wea

1976-07-19

1978-08-08

Peters, Jr., Joseph F.

Cutlery

308237R, 308241, F16C 3324

Patent

active

041052633

ABSTRACT:
The journal and/or pilot bearings of a rotary cone earth boring bit are constructed to include alternating areas of wear resistant materials and anti-galling materials. The bearing matrix is formed by compressing a powdered alloy in the shape of the desired bearing element. The bearing matrix is sintered, thereby forming a porous bearing element. An anti-galling material is infiltrated into the porous matrix of the bearing element and the bearing element is hardened. The resulting bearing element includes areas of wear resistant materials and areas of anti-galling materials.

REFERENCES:
patent: 2096252 (1937-10-01), Koehring
patent: 2365562 (1944-12-01), Koehring
patent: 2706693 (1955-04-01), Haller
patent: 3235316 (1966-02-01), Whanger
patent: 3984158 (1976-10-01), Sorensen

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