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:
May. 20, 2008
Filed:
Dec. 12, 2003
John Charles Calhoon, Woodinville, WA (US);
Leroy B. Keely, Portola Valley, CA (US);
William Mitchell, Medina, WA (US);
John Charles Calhoon, Woodinville, WA (US);
Leroy B. Keely, Portola Valley, CA (US);
William Mitchell, Medina, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
An inductive charging systems transfers energy by inductively coupling a source coil on a charging source to a receiver coil on a charging portion of a battery pack. The source current is received in the battery pack and converted to direct current for storage in the battery pack cells. Communication between a charging source and the charging portion is provided. A wireless communication arrangement provides for authentication of devices that are allowed by a source to be charged.