Multipart oil wiping ring for pistons of internal combustion...

Details Multipart oil wiping ring for pistons of internal combustion... Multipart oil wiping ring for pistons of internal combustion...

2007-12-11

2007-12-11

Engle, Patricia (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Piston ring or piston ring expander or seat therefor

C277S449000, C277S466000

Reexamination Certificate

active

10570103

ABSTRACT:
A multipart oil wiping ring for pistons of internal combustion engines comprises two steel strip-type lamellae with parallel sides, the running surfaces of which are provided with a convexly asymmetric shape having a vertex line that extends across the circumference of the lamellae, and a bracing spring located between the lamellae. The bracing spring presses the lamellae in an axial direction against one respective side of an annular groove in the piston and in a radial direction against the cylinder wall.

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International Search Report.

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