05253939 is referenced by 48 patents and cites 22 patents.

Cylindrical bearing pads are insertable into bearing pad recesses formed in a receiving surface of a bearing pad retainer in a load-carrying structure. The bearing pads have an insertion end which is fixed into the bearing pad recess by brazing or by interference fitting and a bearing end which projects from the receiving surface and terminates in a bearing face. The bearing face has a periphery which encircles the bearing face and an indentation having a perimeter formed centrally in the bearing face. An annular flattened area encircles the indentation forming an effective bearing contact area between an outer border of the flattened area and the perimeter of the indentation. When the indentation is filled with drilling fluid, lubrication is provided to an opposed bearing face of an opposing bearing pad. The indentation can be filled with drilling fluid or some other material with a higher heat storage capacity than polycrystalline diamond to provide temperature modulation for storing heat produced at the bearing face. When filled with a material, the indentation also serves to dissipate heat to reducing the length of a path of heat when the heat is conducted to cooler areas of the bearing face. Alternate embodiments include bearing faces with single or plural indentations of various shapes.

Title
High performance bearing pad for thrust bearing
Application Number
7/797132
Publication Number
5253939
Application Date
November 22, 1991
Publication Date
October 19, 1993
Inventor
David R Hall
Provo
UT, US
Agent
Wayne I Kanak
John J Ryberg
Kent S Burningham
Assignee
Anadrill
TX, US
IPC
F16C 17/04
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