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1. (WO2018127534) PISTON RING HAVING A STEPPED RUNNING SURFACE

Pub. No.:    WO/2018/127534    International Application No.:    PCT/EP2018/050198
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Fri Jan 05 00:59:59 CET 2018
IPC: F16J 9/08
F16J 9/20
Applicants: FEDERAL-MOGUL BURSCHEID GMBH
Inventors: GILLEN, Jürgen
RUCH, Fabian
PRÖPPER, Jörn
Title: PISTON RING HAVING A STEPPED RUNNING SURFACE
Abstract:
The present invention relates to a stepped piston ring (2), comprising a ring outer side (5), an upper ring flank (6), a lower ring flank (8), wherein the ring outer side (5) has a recess (10) on an upper edge, so that only a lower part of the ring outer side (5) forms a running surface (4).