Device for surveillance of a pressure in a vehicle tire

US5101754A · kind A · utility

Assignee

• WABCO Westinghouse Fahrzeugbremsen GmbH · DE

Inventors

• Peter Bartscher · Hannover, DE
• Erwin Petersen · Wunstorf, DE
• Erich Reinecke · Burgdorf, DE
• Gunther Singbartl · Hannover, DE
• Manfred Schniggenfittich · Hannover, DE
• Gerhard Stegemann, deceased · Salzhemmendorf, DE
• Helmut Ulrich · Springe, DE

Key dates

• Filing date: Aug 29, 1990
• Grant date: Apr 7, 1992
• Expiry date: Aug 29, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/3646
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A device for the surveillance of the pressure of a vehicle tire includes a pressure-sensitive device which senses the tire pressure and generates, in case of a pressure loss in the tire, a pressure change signal. A set member is actuated with this pressure change signal such that the signal member performs a stroke. A sensor tests the position of the set member and recognizes when the tire pressure is too low. A pressure-sensitive device (1) includes a check valve (9, 12), opening toward the pressure discharge port (3). The pressure at the pressure discharge port (3) can be blocked versus the tire pressure based on the check valve (9, 12). The invention device is suitable for furnishing a continuous signal up to the complete emptying of a tire.