Patent · US Expired

Device for monitoring the pressure of a vehicle tire

US5400649A · kind A · utility

5Cited by

2References

25Claims

0Family size

Assignee

WABCO Westinghouse Fahrzeugbremsen GmbH · DE

Inventors

Peter Bartscher · Hannover, DE
Stefan Herzog · Salem, DE
Helmut Ulrich · Springe, DE
Gerhard Stegemann, deceased · Salzhemmendorf, DE

Key dates

Filing date	Jul 2, 1993
Grant date	Mar 28, 1995
Priority date	—
Expiry date	Jul 2, 2013

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60C23/0408
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An apparatus is furnished for sensing the tire pressure and for generating a signal by way of an actuator. If the tire pressure drops below the predetermined reference tire pressure, then this is signalled immediately and instantly within a relatively small pressure tolerance threshold. The pressure sensitive device 1 includes a valve device 7. The valve device 7 connects the tire pressure, applied to the actuator 4 and acting against the force of the compression spring 6, to the atmosphere if the tire pressure drops below a predetermined reference tire pressure. The apparatus is suitable for generating a permanent signal, even in case no further pressure remains in a tire.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.