The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2007
Filed:
Dec. 27, 2004
Masashi Kitano, Kobe, JP;
Masashi Kitano, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe-shi, JP;
Abstract
A detection method of reducing the air pressure of tires based on the rotational speed of wheels mounted on a vehicle. The method includes steps of: detecting the rotational speed of each of the wheels; storing the rotational speed of wheels; determining a judgment value of decompression of tires based on the relative comparison of the rotational speed; storing the judgment value in a non-volatile memory; determining an average value obtained by a moving average of a certain number of the judgment value; and judging decompression of tires by comparing the average value with a threshold. Decompression of tires can be detected even if the traveling of a vehicle is repeated for a short time and the chance of judging the reduced pressure of tires is magnified to be able to enhance the safety of vehicle traveling.