Nitride coated piston ring
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United States of America Patent
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Nov 28, 2017
Issued Date -
N/A
app pub date -
Jun 15, 2015
filing date -
Jun 15, 2015
priority date (Note) -
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Abstract
A piston ring and a method of forming a piston ring. A masking agent is applied to a selective area on an exterior surface of a piston ring. The masking agent inhibits the subsequent application of additional coatings to the selective area on the exterior surface of the piston ring. In one form, the masking agent may inhibit the subsequent application of a nitride layer to the selective area on the exterior surface of the piston ring. A recess may be formed in an outer peripheral side of the piston ring, and a thermal spray coating may be formed within the recess in the outer peripheral side of the piston ring.
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