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. 24, 2010
Filed:
Feb. 08, 2006
Yasuo Hatano, Kanagawa, JP;
Yasuo Hatano, Kanagawa, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
The invention provides a tire with an electric power generation device for supplying sufficient electric power which has a simple and small-sized construction. An electric power generation device for converting strain occurring in a tire into electric energy includes at least one electric power generation element and a device body. The electric power generation element has at least two stretchable electrodes and a dielectric elastomer, arranged between the electrodes, and producing a potential difference between the electrodes according to the strain applied from the tire. The device body has an electrical condenser for accumulating electric energy produced by the electric power generation element. The length, in the circumferential direction of the tire, of the electric power generation element is set so that strain by contraction and strain by expansion that are caused by the rotating tire coming into contact with the ground surface are not simultaneously applied to the single power generation element.