Federal-mogul Burscheid Gmbh

Federal-mogul Friedberg Gmbh

Frank Nathem

Richard Mittler

Peter Schmidt

Johann Riedl

Markus Mahl

Reinhard Laumeyer

A piston ring () has at least one ring flank seal () arranged on a lower ring flank () of the piston ring.

Piston ring having a groove seal

A piston ring having an outer running face, two flanks and an inner circumferential face is provided, the running face of which has profiling with a groove. The groove is arranged between two running face sections in relation to the cross section of the piston ring. The two running face sections are spaced apart from each other and substantially convexly curved and each have an apex. The groove has a periodically varying depth and a periodically varying width, and the number of periods of the course of the depth and the number of periods of the course of the width are equal.

Piston ring with a periodically varying groove

Growing community of inventors

Mering, Germany

Frank Nathem