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. 24, 2018
Filed:
May. 29, 2014
Applicant:
Apple Inc., Cupertino, CA (US);
Inventor:
Chad A. Bossetti, Cupertino, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H01F 38/14 (2006.01); H02J 7/02 (2016.01);
U.S. Cl.
CPC ...
H01F 38/14 (2013.01); H02J 7/025 (2013.01);
Abstract
Wireless power transfer systems having improved tolerance for coil misalignment are disclosed. These systems efficiently transfer power to accessories having a variety of power modes. For example, a power transmitter may vary the amount of power transmitted to a power receiver in response to changes in the power requirements of that power receiver. The power transmitter and the power receiver may be mutually tuned to filter or substantially reduce respective leakage inductances at both a primary and secondary operating frequency.