Friction bearing for deep well drilling tools
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United States of America Patent
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Jan 9, 1990
Grant Date -
N/A
app pub date -
Mar 24, 1988
filing date -
Mar 25, 1987
priority date (Note) -
Expired
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Abstract
A friction bearing suitable for use with well drilling tools which includes a trace ring with a sliding surface formed of a plurality of sintered molded bodies countersunk to be flushed with the surface of the ring, and arranged side by side in a mosaic pattern to define a ring channel with an essentially close surface. The trace ring may have molded segments of different types of molded bodies, and of different shapes.
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