Thrust bearing and bearing device for crankshaft of internal combustion engine
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United States of America Patent
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Mar 6, 2018
Grant Date -
Mar 2, 2017
app pub date -
Aug 25, 2016
filing date -
Aug 26, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a thrust bearing, including a pair of half thrust bearings. Each half thrust bearing includes a bearing alloy layer and a resin slide layer, or a back metal layer, a bearing alloy layer and a resin slide layer. The resin slide layer constitutes a slide surface receiving an axial force of a crankshaft. Each half thrust bearing include thrust reliefs formed adjacent to both circumferential end portions of the sliding surface so that a wall thickness is thinner toward the circumferential end surface. A thrust relief length at an inner end portion of the thrust relief positioned on a rear side of one of the half thrust bearings in a rotational direction is larger than a thrust relief length at an inner end portion of the thrust relief positioned on a front side of the other of the half thrust bearing in the rotational direction.
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