×

Method and apparatus for alarming decrease in tire air-pressure

  • US 6,696,934 B2
  • Filed: 12/11/2001
  • Issued: 02/24/2004
  • Est. Priority Date: 12/14/2000
  • Status: Active Grant
First Claim
Patent Images

1. A method for alarming a decrease in tire air-pressure in which a decrease in internal pressure of a tire is detected on the basis of rotational information obtainable from wheels mounted to a vehicle and a driver is accordingly alarmed, comprising the steps of:

  • detecting rotational signals of respective tires;

    storing rotational information upon calculation of the rotational signals of the respective tires;

    setting a plurality of thresholds for judging air-pressure when the vehicle is traveling on a bad road;

    judging, on the basis of rotational information of the respective tires, that the vehicle is traveling on a bad road; and

    judging a decrease in air-pressure of a tire on the basis of a judged value which is calculated from the rotational information of the respective tires, when it has been judged that the vehicle is traveling on a bad road.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×