Solenoid valve with a check valve

US6439265B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Peggy Gruschwitz · Stuttgart, DE
• Martin Oehler · Leingarten, DE
• Heike Bauer · Stuttgart, DE
• Rolf Nicodemus · Bietigheim-Bissingen, DE

Key dates

• Filing date: Nov 20, 2000
• Grant date: Aug 27, 2002
• Expiry date: Nov 20, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/87555
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A solenoid valve useful in a slip-controlled hydraulic brake system of a motor vehicle, and which has a seat valve disposed between a pressure fluid inlet and a pressure fluid outlet and in the bypass to the seat valve has a check valve with a quad ring as a closing body and a circular ring surface as a valve seat. Circularly disposed pressure fluid openings adjoin the circular ring surface and are overlapped on the radial inside and on the radial outside by respective sealing lips of the annular rubber-elastic closing body, which is guided with axial motion play in relation to the circular ring surface.