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:
Jan. 27, 2009
Filed:
Jun. 16, 2004
Yutaka Hattori, Kanagawa, JP;
Yasuo Hatano, Kanagawa, JP;
Yutaka Hattori, Kanagawa, JP;
Yasuo Hatano, Kanagawa, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
An anti-lock brake system and a sensor unit for the system, where acceleration occurring in a wheel is easily detected with high accuracy to perform braking control of a motor vehicle. Sensor units () having acceleration sensors that detect acceleration occurring, with the rotation of tires (), in X, Y, and Z directions including the tire rotating direction are provided on rotating bodies of rotation mechanism portions including each tire (). The sensor units () transmit digital values of the detected result as digital information by an electromagnetic wave. The digital information is received by a monitor device () provided on each tire house, and an acceleration value obtained by calculation is outputted to a brake control unit (). The brake control unit () estimates a strain amount of each tire () based on the obtained acceleration value and previously memorized strain characteristic information, controls a pressure regulating valve () based on the estimated tire strain amount and a detected result of a rotating speed of each tire (), and drives a brake driving actuator ().