Patent · US Expired

Sealing ring

US4202555A · kind A · utility

8Cited by

4References

11Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Bernd-Dietmar Becker · Berlin, DE
Hans Forch · Birkenau, DE
Adam Helfrich · Hösbach, DE
Gottfried Jung · Fürth, DE

Key dates

Filing date	Feb 12, 1979
Grant date	May 13, 1980
Priority date	—
Expiry date	Feb 12, 1999

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/7096
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A sealing ring comprises a reinforcing ring composed of thermoplastic material and has at least one annular groove therein and a lip ring concentrically nested in the reinforcing ring and having a circular bead for each annular groove. The circular bead has the same profile as the annular groove and is set therein. Each bead has a profile which in the projecting portion is enlarged in the manner of a wedge extending essentially radially outwardly and a nominal diameter on which each bead is disposed is smaller than the nominal diameter of the associated groove.

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