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:
Oct. 08, 2002
Filed:
Dec. 26, 2001
Shigeo Abe, Tsurugashima, JP;
Hideki Kojima, Tsurugashima, JP;
Toko Kabushiki Kaisha, Tokyo-To, JP;
Abstract
A non-contact charger wherein a battery-driven electronic device containing a secondary battery is provided in a power supply section and electrical power is supplied thereto by non-contact, the non-contact charger including: a primary side coil and a secondary side coil, the primary side coil supplying power to the secondary side coil by electromagnetic induction, the primary side and secondary side coils being provided to face each other with a case therebetween; the primary side coil containing a U-shaped magnetic core having a leg at each end thereof, and windings which are wound around the magnetic legs; and the secondary side coil containing a U-shaped magnetic core having a leg at each end thereof, and a winding which is wound around a common magnetic core of the U-shaped magnetic core; the cross-sectional area of the magnetic legs of the primary side coil being greater than the cross-sectional area of the magnetic legs of the secondary side coil.