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:
Apr. 30, 2019
Filed:
Jun. 16, 2016
Apple Inc., Cupertino, CA (US);
David W. Ritter, San Jose, CA (US);
David B. Kosecoff, San Francisco, CA (US);
David S. Kumka, San Francisco, CA (US);
Madhusudanan Keezhveedi Sampath, San Jose, CA (US);
Steven Charles Michalske, Sunnyvale, CA (US);
Tavys Q. Ashcroft, San Jose, CA (US);
Aditya Rao, San Francisco, CA (US);
Ariadne Smith, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A wireless charging system including a transmitter and a receiver. The transmitter is formed of a coil of wire that includes a first loop portion, a second loop portion, and a crossing portion. The crossing portion electrically couples the first loop portion and the second loop portion such that when current is generated in the coil, electrical current flows through the first loop portion in a different rotational direction than in the second loop portion. The receiver is formed of a ferromagnetic core and multiple (e.g., three) coils disposed about the ferromagnetic core. Each coil may be disposed about a different axis of the core such that current may be induced in at least one of the coils by a magnetic field in any direction.