Manometer device for continuous monitoring of the air pressure in vehicle tires

US4658644A · kind A · utility

Assignee

• Dieter Coesfeld · DE

Inventors

• Dieter Coesfeld · Vellmar, DE
• Bernhard Hugemann · Frankfurt am Main, DE
• Ludwig Scondo · Frankfurt am Main, DE
• Wilhelm Schuster · Linz, AT
• Hans D. Schwabe · Staufenberg, DE
• Jurgen Stahl · Frankfurt am Main, DE
• Klaus Stosser · Eppstein, DE

Key dates

• Filing date: Sep 25, 1985
• Grant date: Apr 21, 1987
• Expiry date: Sep 25, 2005

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60C23/0425
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A manometer device for continuous monitoring of the air pressure in vehicle tires is described which consists of a manometric capsule and an electrical indicator device associated therewith. A flatly conical membrane with a cylindrical projection is arranged transversely through the interior space of the manometric capsule. A permanent magnet is inserted in this projection. The membrane divides the interior space of the manometric capsule into two chambers, of which one chamber is stressed with a nominal pressure and the other chamber is connected to the pressure space of a vehicle tire. A stationary sensor, which is associated with the manometric capsule to be mounted on a rim flange, responds to linear magnetic field variations and transmits the latter to a terminal.