OIL SCRAPER PISTON RING AND METHOD FOR PRODUCING AN OIL SCRAPER PISTON RING
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United States of America Patent
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Issued Date -
Jan 19, 2017
app pub date -
Mar 4, 2015
filing date -
Mar 4, 2014
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Abstract
An oil scraper piston ring, includes a base body that has a running face region provided with running lands, an inner circumferential surface, upper and lower flanks, and oil drainage boreholes/slots extending between the running lands up to the inner circumferential surface. Manufacturing steps to produce the oil scraper piston rings are performed in a plurality of oil scraper piston ring blanks mounted on the same round mandrel.
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