PISTON RING
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United States of America Patent
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Issued Date -
Jun 25, 2015
app pub date -
Apr 24, 2013
filing date -
Aug 28, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A piston ring that can maintain an excellent aluminum adhesion prevention effect over a long period in a high output engine is provided. One aspect of a piston ring according to the present invention is a piston ring in which at least one of upper and lower surfaces is covered with a resin-based film containing a plate-like filler, wherein the plate-like filler contains at least one of a group selected from alumina, silicon carbide, silicon nitride, and boron nitride.
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