Automotive vehicle braking unit

US4966420A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Lothar Schiel · Hofheim, DE
• Ralf Jakobi · Flörsheim, DE
• Juergen Bauer · Burgkunstadt, DE

Key dates

• Filing date: May 15, 1989
• Grant date: Oct 30, 1990
• Expiry date: May 15, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S303/04
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An anti-locking automotive vehicle braking unit wherein to achieve a reduction of the costs of manufacture and of mounting with an increase of reliability in operation, a pneumatic device (39, 40) is provided for venting of the first power chamber (5) and/or evacuation of the second power chamber (6) of the vacuum brake power booster (1) in the event of a slip control action. This renders the boosting power of the vacuum brake power booster effective or ineffective in a direction opposed to the direction of actuation of the master brake cylinder (2).