Patent · US Expired

Pressure valve

US5950669A · kind A · utility

27Cited by

10References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Fehlmann · Stuttgart, DE
Ruben-Sebstian Henning · Stuttgart, DE
Walter Fuchs · Stuttgart, DE

Key dates

Filing date	Feb 19, 1998
Grant date	Sep 14, 1999
Priority date	—
Expiry date	Feb 19, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/778
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a pressure valve for installation in a supply line between a pump work chamber of a fuel injection pump and an injection site in an internal combustion engine to be supplied thereby. A valve body is provided with a valve seat and has a through conduit in which a pressure valve closing member is guided. A check valve is disposed in a work chamber, wherein the check valve and the pressure valve closing member are movable relative to one another, in the through conduit. A restoring spring on the injection side causes the check valve to rest in the through bore and on the pump chamber side disposes the pressure valve closing member to the valve seat of the valve body.

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