Switch valve arrangement

US4746172A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Dietmar Gath · Schönberg (Holstein), DE
• Holger von Hayn · Bad Vilbel, DE

Key dates

• Filing date: Dec 5, 1986
• Grant date: May 24, 1988
• Expiry date: Dec 5, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/445
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A switch valve arrangement (10) for changing over the inlet of a fluid pressure slave unit (16-19) from the outlet of a first fluid generator (5 or 6) to the outlet of a second fluid pressure generator (1, 13), during switch-on of the second fluid pressure generator for brake systems of automotive vehicles. The arrangement comprises a first valve (V.sub.1) which, upon switch-on of the second fluid pressure generator (1, 13) blocks the connection between the first pressure geneator (5) and the fluid pressure slave unit (16-19), and comprises a second valve (V.sub.2) releasing the connection between the second fluid pressure generator (1, 13) and the fluid pressure slave unit (16-19). Upon switch-on of the second fluid pressure generator (1, 13), provision is made so that the second valve (V.sub.2), with a fluid-releived first valve (V.sub.1) and a fluid pressure-loaded second valve (V.sub.2), takes its blocking position, thereby permitting a pressure decrease on the part of the second fluid pressure generator in the event of a conduit break between the first fluid pressure generator and the fluid pressure slave unit to be precluded.