Patent · US Expired

Valve apparatus

US5168898A · kind A · utility

5Cited by

11References

3Claims

0Family size

Assignee

Mannesmann AG · DE

Inventors

Helmut Gottling · Altwarmbüchen, DE
Reinhard Mauentobben · Hannover, DE
Rudolf Moller · Gehrden, DE
Gerhard Scharnowski · Gehrden, DE

Key dates

Filing date	Jun 17, 1991
Grant date	Dec 8, 1992
Priority date	—
Expiry date	Jun 17, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86767
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve apparatus which contains two valve bodies oriented behind one another on a tappet. The first valve body, together with a first valve seat, forms a first valve and the second valve body, together with a second valve seat, forms a second valve. With two valve bodies rigidly connected to one another, it is possible, such as on account of manufacturing tolerances, that when the two valves are closed, one of the two valve bodies will not seat exactly on its corresponding valve seat, which means that leaks can occur. The present invention provides for at least one of the two valve seats or at least one of the two valve bodies being adjustable in the direction of the longitudinal axis of the tappet in relation either to the other valve seat or in relation to the other valve body to change the distance between the two valve seats or to change the distance between the two valve bodies.

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