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:
Nov. 13, 2012
Filed:
Jun. 03, 2009
Takumi Inoue, Nukata-gun, JP;
Hiroyuki Sakakibara, Hekinan, JP;
Shinji Ichikawa, Toyota, JP;
Nippon Soken, Inc., Nishio-Shi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
Electric power supplying equipment and an electric power receiving device include a primary self resonant coil and a secondary self resonant coil, respectively, resonating through an electromagnetic field to allow the electric power supplying equipment to supply the electric power receiving device with electric power in a non-contact manner. A control device controls a high frequency electric power supply device to control supplying electric power from the primary self resonant coil to the secondary self resonant coil. The control device estimates a distance between the primary self resonant coil and the secondary self resonant coil from an S-parameter S11 varying with the distance between the primary self resonant coil and the secondary self resonant coil, and controls supplying electric power, based on that estimated distance.