Patent · US Expired

Piston ring, in particular for a piston of a vibration damper

US6719297B2 · kind B2 · utility

1Cited by

19References

19Claims

0Family size

Assignee

Mannesmann Sachs AG · DE

Inventors

Gerald Fenn · Pfersdorf, DE
Hassan Asadi · Schweinfurt, DE
Matthias Höhn · Dettelbach, DE
Peter Wirth · Winsen, DE

Key dates

Filing date	Aug 27, 2001
Grant date	Apr 13, 2004
Priority date	—
Expiry date	Aug 27, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J9/14
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Piston ring including a covering surface which covers a circumferential surface of a piston, and supporting segments having retaining surfaces which engage the upper and lower sides of the piston. The piston ring has a butt joint which enables the piston ring to be elastically deformable radially, the butt joint being designed at one end of the covering surface with at least one tongue which engages in a cutout in the other end of the covering surface. The tongue is designed with at least one retaining segment which runs in the circumferential direction and engages in a supporting manner in each case on the upper and lower side of the piston.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.