Bearing assemblies, and bearing apparatuses and motor...

Details Bearing assemblies, and bearing apparatuses and motor... Bearing assemblies, and bearing apparatuses and motor...

2010-12-09

2011-12-06

Andrews, David (Department: 3672)

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

C175S104000, 36, 36

Reexamination Certificate

active

08069933

ABSTRACT:
Various embodiments of the present invention relate to bearing assemblies configured to accommodate non-uniform loading and misalignment with an adjacent bearing assembly. In one embodiment of the present invention, a bearing assembly for use in a subterranean drilling system is disclosed. The bearing assembly includes a support ring and a retention ring attached to the support ring, with the retention ring including a plurality of through holes. The bearing assembly includes a plurality of bearing elements each of which includes a superhard bearing surface. Each of the bearing elements is positioned in and extends from a corresponding through hole of the plurality of through holes. At least a number of the bearing elements are configured to restrict displacement through the corresponding through hole and away from the support ring. Further embodiments of the present invention are directed to a thrust-bearing apparatus, a radial bearing apparatus, and a downhole motor that incorporates disclosed thrust-bearing and radial bearing assemblies.

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