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:
Jul. 28, 2015
Filed:
Sep. 14, 2011
Atsushi Kiyota, Kawasaki, JP;
Atsushi Kiyota, Kawasaki, JP;
NEC Casio Mobile Communications, Ltd., Kawasaki-shi, Kanagawa, JP;
Abstract
Provided is a non-contact power transmission apparatus that can be made thinner without any drop in power transmission efficiency. The non-contact power transmission apparatus includes: primary coil () generating a magnetic flux (Φ); secondary coil () disposed facing primary coil () to receive power in a non-contact manner from primary coil () by electromagnetic induction; magnetic-substance layer () that covers a side opposite the side of secondary coil () facing primary coil () so that the magnetic flux (Φ) can pass; magnet portion () disposed to be able to switch two magnetic poles and configured to generate a magnetic flux (Φ) that is larger than the difference between the maximum value of the first magnetic flux (Φ) and the saturated magnetic flux of magnetic-substance layer () and that passes through magnetic-substance layer () in a direction in which magnetic-substance layer () spreads; and magnetic pole switching unit () that detects the direction of the first magnetic flux (Φ), and switches the magnetic pole of magnet portion () to generate a magnetic flux (Φ) in a direction opposite the direction of the first magnetic flux (Φ).