Bearing apparatus having internal lubrication grooves
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United States of America Patent
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Nov 11, 1997
Grant Date -
N/A
app pub date -
Dec 20, 1996
filing date -
Dec 15, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a bearing including an inner bearing surface that is formed by a layer of self-lubricating material and that contains axially extending and circumferentially spaced apart lubrication grooves. The inner bearing surface and the grooves therein are formed by conforming the self-lubricating material to the outer surface of a mandrel that has elongated members supported thereon so that the elongated members form the lubrication grooves. An overlayment is then applied on the layer of self-lubricating material, the overlayment including a plurality of filaments wound around the layer of self-lubricating material, and a hardenable liquid to bond the layer of self-lubricating material to the overlayment.
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