Patent · US Expired

Pressure responsive valve

US4463929A · kind A · utility

14Cited by

3References

6Claims

0Family size

Assignee

Mannesmann Rexroth AG · DE

Inventors

Joerg Dantlgraber · Lohr, DE
Albert Mueller · Aschaffenburg, DE

Key dates

Filing date	Feb 24, 1982
Grant date	Aug 7, 1984
Priority date	—
Expiry date	Feb 24, 2002

Classification

Technology area (CPC G)Physics
CPC primaryG05D16/2097
WIPO fieldControl
WIPO sectorInstruments

Abstract

A pressure valve has a valve member 22 which can be lifted from its seat against the effect of a valve spring 25, 26 and a control piston 12 which is movable coaxially to the valve member, and a connection passage 15, 21, 23 having a throttle point 16 extending from the pressure side of the valve member to an opening on the side of piston 12 which faces away from the valve member. In order that the valve limit pressure peaks with a simple structure, the valve spring abuts on the control piston and the surface of the valve member on which pressure acts is smaller than the surface of the control piston on which pressure acts and which connected to the valve member surface through the connection passage.

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