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:
Feb. 24, 2004
Filed:
Mar. 06, 2002
Takafumi Nanbu, Saitama, JP;
Atsushi Koshiyama, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A contactless power transmitting system includes a power transmitting circuit and a power receiving circuit that are coupled by a transformer having a primary coil and a secondary coil. The power transmitting circuit includes a switching power supply having a predetermined frequency. The power receiving circuit includes a capacitor that is connected to the secondary coil and that constitutes a resonating circuit in cooperation with the leakage inductance of the secondary coil and a flyback rectifier circuit. The capacitance of the capacitor is set so that the resonant frequency of the resonating circuit is substantially equal to the predetermined frequency of the switching power supply.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile