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:
Feb. 05, 2019
Filed:
Mar. 22, 2018
Applicant:
Witricity Corporation, Watertown, MA (US);
Inventor:
Guillaume Lestoquoy, Cambridge, MA (US);
Assignee:
WiTricity Corporation, Watertown, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 27/38 (2006.01); H02J 50/12 (2016.01); H02J 7/00 (2006.01); H01F 3/14 (2006.01);
U.S. Cl.
CPC ...
H01F 27/385 (2013.01); H01F 27/38 (2013.01); H02J 50/12 (2016.02); H01F 3/14 (2013.01); H02J 7/00 (2013.01);
Abstract
Methods and apparatus for flux cancellation includes first and second inductors. A system cam include first and second inductors and a layer of magnetic material disposed between the first inductor and the second inductor. In embodiments, when the inductors are driven with a respective oscillating current, at least a portion of magnetic flux generated by the first inductor is substantially canceled by at least a portion of magnetic flux generated by the second inductor in the layer of magnetic material.