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:
Jul. 23, 2013
Filed:
Nov. 21, 2007
Yasumichi Wakao, Tokyo, JP;
Yasushi Hanatsuka, Tokyo, JP;
Yasumichi Wakao, Tokyo, JP;
Yasushi Hanatsuka, Tokyo, JP;
Kabushiki Kaisha Bridgestone, Tokyo, JP;
Abstract
A vehicle velocity detectoris provided, velocity V is detected from position data of the vehicle calculated by using signal from satellites, which is received by a GPS receiverinstalled to a vehicle body, wheel rotation velocity Vdetected by a wheel velocity sensoris corrected in accordance with tire inner pressure detected by a pressure sensorso as to obtain wheel rotation velocity (correction value) V, velocity ratio R=(V/V), which is ratio of the corrected wheel rotation velocity Vand the detected wheel velocity V, is calculated and tire wear amount is estimated in accordance with velocity ratio R so that tire wear amount can be measured precisely without processing the tire tread portion.