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. 10, 2018
Filed:
Jan. 22, 2015
Apple Inc., Cupertino, CA (US);
Eugenio Jr. Sia Lecias, Auckland, NZ;
Junbo Zeng, Auckland, NZ;
Saining Ren, Auckland, NZ;
Daniel James Robertson, Auckland, NZ;
Michael Nasa, Auckland, NZ;
Ron Rafer Floresca, Auckland, NZ;
Arunim Kumar, Auckland, NZ;
Ali Abdolkhani, Auckland, NZ;
Apple Inc., Cupertino, CA (US);
Abstract
An inductive power transfer device including: a resonant circuit, having a power transfer coil and a power transfer capacitor; a coupling coil, magnetically-coupled to the power transfer coil; a variable impedance; and a controller configured to determine the impedance value of the variable impedance based on predetermined criteria including: substantially regulating power provided to a load; tuning the resonant circuit resonant frequency substantially to a predetermined frequency; adjusting a frequency of a magnetic field associated with the power transfer coil; and/or adjusting an impedance reflected by the power transfer coil to a corresponding coupled power transfer coil.