Patent · US Expired

Pressure control valve

US4327767A · kind A · utility

11Cited by

6References

3Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Siegfried Fehrenbach · Markgröningen, DE
Eberhard Utz · Stuttgart, DE
Kurt Herbst · Burgstetten, DE

Key dates

Filing date	Feb 25, 1980
Grant date	May 4, 1982
Priority date	—
Expiry date	Feb 25, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86381
WIPO fieldControl
WIPO sectorInstruments

Abstract

A pressure control valve to control the pressure of a fluid in a fluid system so that it remains constant. This type of valve can be utilized as element of a fuel injection system for internal combustion engines, and has storage means which are independent of the valve member, and actuatable by the pressure of the fluid. The pressure control valve comprises a housing and a support assembly urged toward a valve seat by a control spring. Additionally, a storage spring in the support assembly urges a closing member toward the valve seat. The closing member is slidably received in a bore in the support assembly. The support assembly is connected to a membrane which is tensioned between the housing members. Other variations of this device are also revealed herein.

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