COMBINATION OIL RING
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United States of America
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Jul 24, 2017
filing date -
Jul 24, 2017
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Abstract
Provided is an oil ring. A shape of an outer peripheral surface of an upper segment arranged on an engine combustion chamber side has a symmetrical curved shape. A shape of an outer peripheral surface of a lower segment arranged on a side away from the engine combustion chamber is a symmetrical curved shape.
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