Resilient plastic piston ring

Details Resilient plastic piston ring Resilient plastic piston ring

F - Mech Eng,Light,Heat,Weapons

16

J

277/30

F16J 9/06 (2006.01) F16J 9/08 (2006.01) F16J 9/20 (2006.01) F16J 9/28 (2006.01) F16J 15/32 (2006.01)

Patent

CA 1074360

ABSTRACT A plastic ring for internal combustion engine pistons. In a preferred embodiment, the ring has an outer diameter adapted to engage the inner diameter of a compression piston ring and an inner diameter adapted to engage the back wall of the ring groove. An axial groove slightly spaced from the outer diameter extends into the ring from the top thereof, whereby combustion gases will expand the ring so that it acts as a circumferential expander for the compression ring while preventing blowby of gases through the ring groove.

312380

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