Vacuum brake force booster with acoustic insulation

US5024304A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Sigmund Booten · Oberursel, DE
• Uwe Kley · Frankfurt am Main, DE
• Cristiano Hoffmann · Maintal, DE

Key dates

• Filing date: Dec 13, 1989
• Grant date: Jun 18, 1991
• Expiry date: Dec 13, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T13/52
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

To substantially eliminate the noise arising upon actuation of a vacuum brake force booster caused by incoming air, the housing section confining the ventable working chamber and/or the intervals in the control valve housing are lined with an insulating composition for attenuating noise.