Patent · US Expired

Sealing gasket

US4434989A · kind A · utility

22Cited by

4References

9Claims

0Family size

Assignee

Goetze GmbH · DE

Inventors

Horst Beyer · Basel, CH
Klaus Lonne · Burscheid, DE
Klaus-Peter Majewski · Burscheid, DE

Key dates

Filing date	Jan 18, 1982
Grant date	Mar 6, 1984
Priority date	—
Expiry date	Jan 18, 2002

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2225/04
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A flat sealing gasket, such as a cylinder head gasket, for an internal combustion engine, has at least one opening, a cross-sectionally generally U-shaped armor framing the opening. The armor has legs straddling marginal edge zones of the gasket defining the opening. Each armor leg has an inner face in engagement with the gasket and an outer face oriented away from the gasket. A low-friction coating is provided on the outer face of at least one of the armor legs. Those sealing faces of the gasket which are externally of the armor are substantially free from the low-friction coating.

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