Patent · US Expired

Method of determining a variable air pressure value of a pneumatic vehicle tire and indicating a pressure value

US4909074A · kind A · utility

74Cited by

10References

5Claims

0Family size

Assignee

Uniroyal Englebert Reifen GmbH · DE

Inventors

Manfred Gerresheim · Würselen, DE
Boris Klaus Peter Nitsch · Alzenau, DE
Gerhard Mauk · Wunstorf, DE

Key dates

Filing date	Dec 20, 1988
Grant date	Mar 20, 1990
Priority date	—
Expiry date	Dec 20, 2008

Classification

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

Abstract

A method for detecting, evaluating, and indicating a tire air pressure value. Information signals are compared with a plurality of desired value curves having a tolerance range and an average value for the atmospheric temperature, whereupon these signals are evaluated. The pressure deviation, as a function of the desired value tolerance ranges, is assigned a specific pressure state, from which an acutal air pressure state is indicated that takes into account regional and seasonal pressure and temperature influences. Furthermore, a maximum speed and a permissible speed can be determined during emergency operation, or a state of emergency operation can be determined.

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