Patent · US Expired

Check valve

US5353834A · kind A · utility

13Cited by

10References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Edgar Schmitt · Lambach, DE
Heinz Siegel · Stuttgart, DE
Manfred Wilhelm · Weingarten, DE
Georg Kehl · Stuttgart, DE

Key dates

Filing date	Sep 24, 1993
Grant date	Oct 11, 1994
Priority date	—
Expiry date	Sep 24, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7937
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a check valve, for use as an insert check valve, with a valve seat and a valve element that is resiliently prestressed against the valve seat by a valve spring. According to the invention, a retaining element embodied as a retaining bracket is provided, which supports the end of the valve spring remote from the valve element and the retaining element can be locked resiliently to a recess, particularly an annular groove, of the valve housing. This enables fast, simple assembly of the check valve from its individual parts.

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