Patent · US Expired

Diaphragm valve

US4161961A · kind A · utility

6Cited by

2References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Heinrich Knapp · Leonberg, DE
Max Greiner · Gerlingen, DE
Klaus-Jurgen Peters · Marbach am Neckar, DE
Gunther Jaggle

Key dates

Filing date	Sep 9, 1977
Grant date	Jul 24, 1979
Priority date	—
Expiry date	Sep 9, 1997

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7788
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A diaphragm valve which may serve as an equal pressure valve or as a pressure equalizing valve of a fuel metering and distributing unit for an externally ignited internal combustion engine. The valve has a flexible diaphragm having a clamped diameter and a pocket in the diaphragm supports a valve plate. The valve plate operatively cooperates with a valve seat of the valve and has an annular recess arranged to receive a spring to center the valve plate. The valve also includes a stationary thrust plate which is concentrically disposed relative to the valve seat, which defines a knife-shaped edge which lies in a common plane with the valve seat and which operatively cooperates with the valve plate. The knife-shaped edge is penetrated by a plurality of radially extending means defining openings therein.

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