PISTON RING WITH VARYING APEX LINES
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United States of America Patent
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Issued Date -
Oct 15, 2015
app pub date -
Sep 23, 2013
filing date -
Nov 9, 2012
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Abstract
A piston ring having an outer running face, two flanks and an inner circumferential face is provided. The running face has profiling. The profile of the running face is substantially convexly curved and has an apex. The axial position of the apex varies periodically in the circumferential direction.
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