Patent · US Expired

Pressure control valve slip-controlled hydraulic brake systems

US5290096A · kind A · utility

7Cited by

7References

2Claims

0Family size

Assignee

Alfred Teves GmbH · DE

Inventors

Erhard Beck · Darmstadt, DE
Anton David · Dreieich, DE
Helmut Weisbrod · Bad Nauheim, DE
Horst Kornemann · Frankfurt am Main, DE

Key dates

Filing date	May 8, 1992
Grant date	Mar 1, 1994
Priority date	—
Expiry date	May 8, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/785
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A pressure control valve is disclosed comprising a valve tappet (1) guided in a valve housing (3) and accommodating a compression spring (4), with a valve closure member (10) on one end of the valve tappet (1) and mating with a valve seat (9) establishing a connection between a pressure supply port (11) that emanates from a pressure fluid source and a pressure return channels (12) once the pressure attains a specific preset desired valve. In order to diminish noise, at least one friction element (2) is engagement with the valve tappet (1) movable to abut on radial friction surfaces of the valve housing (3) and/or the valve tappet (1).

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