Bearing design for drill bit

Details Bearing design for drill bit Bearing design for drill bit

1981-11-12

1983-07-26

Levy, Stuart S.

Bearings

Rotary bearing

Roller drill bit

175371, F16C 1900

Patent

active

043950760

ABSTRACT:
A bearing construction for a rotary earth boring drill bit is constructed of a bearing journal and a cutter rotatively mounted on the bearing journal, the bearing journal having a generally cone-shaped bearing wall formed by a plurality of steps comprised of a pair of adjacent walls joined at an apex having an acute included angle, and the cutter having a bearing wall formed with a plurality of steps mating in bearing contact with the steps of the bearing journal.

REFERENCES:
patent: 959540 (1910-05-01), Hughes
patent: 1649859 (1927-11-01), Reed
patent: 1932489 (1933-10-01), Scott

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