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:
Mar. 02, 2010
Filed:
Jul. 11, 2007
Applicants:
Tsuyoshi Kitazaki, Kanagawa, JP;
Jun Matsuda, Kanagawa, JP;
Naoshi Miyashita, Kanagawa, JP;
Inventors:
Assignee:
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C 23/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The apparatus acquires acceleration data in time series at a fixed position of a tire while a vehicle having the tire is traveling on a road surface, obtains a spectrum of the acceleration by subjecting the acquired time series acceleration data to frequency analysis, and detects a peak value of the spectrum of the acceleration in a frequency range of 500 Hz-1500 Hz. The apparatus evaluates a degree of a safety in traveling of the vehicle according to the detected peak value. The acceleration data is acquired by an acceleration sensor mounted on the fixed position of the tire.