METHOD FOR PRODUCING A PISTON RING
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United States of America Patent
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Issued Date -
Jul 11, 2013
app pub date -
Jun 29, 2011
filing date -
Sep 27, 2010
priority date (Note) -
Abandoned
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Abstract
Method for producing a piston ring provided with a butt joint, in that an annular metallic main body is provided with at least one hard layer at least in the area of the outer circumferential surface of said main body, wherein after this coating the inner circumferential surface of the piston ring is at least partially subjected to a wall-thickness-reducing material removal process.
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