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:
May. 04, 2010
Filed:
Mar. 25, 2008
Akihiro Miyoshi, Kobe, JP;
Akihiro Miyoshi, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
A method for estimating the magnitude of a tire force acting on a rolling tire is disclosed, wherein: using at least seven sensors mounted on a tire sidewall portion, surface strain is simultaneously measured at seven measuring positions; with respect to a combination of the seven measuring positions, a coefficient matrix representing correlation with seven force components is defined, and a equation including the coefficient matrix is defined; using the data on the surface strain measured with the sensors, the equation is computed to find at least one of the seven force components, e.g. air pressure. The estimated air pressure is compared with a reference pressure, to determine whether the tire pressure is dropped or not. Further, a secondary sensor is mounted in a peculiar region where the surface strain is substantially not affected by the vertical load.