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:
Aug. 23, 2005
Filed:
Jun. 21, 2002
Applicants:
Shuhei Tsuchie, Kodaira, JP;
Yoshinori Imamura, Kodaira, JP;
Koji Takao, Kodaira, JP;
Masanobu Toyofuku, Kodaira, JP;
Inventors:
Shuhei Tsuchie, Kodaira, JP;
Yoshinori Imamura, Kodaira, JP;
Koji Takao, Kodaira, JP;
Masanobu Toyofuku, Kodaira, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01C023/00 ; C01C023/00 ;
U.S. Cl.
CPC ...
Abstract
A method for directly and accurately estimating friction coefficient of a road surface independently from the slip rate is disclosed. The method measures tangential and vertical forces acting on an elastic bodyof an elastic wheel, and calculates the friction coefficient of a road surface based on the measured values of these forces and angular rate of the wheel