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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.:

US 10404100 B1

PDFFull Text
Date of Patent:
Sep. 03, 2019

Filed:

Jun. 15, 2016

Double-d based pad magnetics for reduced emissions in flush mounted and buried wireless power transfer applications

Applicant:

Witricity Corporation, Watertown, MA (US);

Inventor:

Michael Werner, Markt Schwaben, DE;

Assignee:

WiTricity Corporation, Watertown, MA (US);

Attorney:

Knobbe, Martens, Olson & Bear, LLP

Primary Examiner:

Rexford N Barnie

Assistant Examiner:

Dru Parries

Int. Cl.
CPC ...
H01F 38/00 (2006.01); H02J 50/12 (2016.01); H02J 50/70 (2016.01); H01F 27/28 (2006.01); H01F 38/14 (2006.01); H02J 7/02 (2016.01); H01F 27/36 (2006.01); H02J 5/00 (2016.01); H02J 50/10 (2016.01); H04B 5/00 (2006.01); B60L 53/12 (2019.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
H02J 50/12 (2016.02); B60L 53/12 (2019.02); H01F 27/2823 (2013.01); H01F 27/2871 (2013.01); H01F 27/365 (2013.01); H01F 38/14 (2013.01); H02J 5/005 (2013.01); H02J 7/025 (2013.01); H02J 50/10 (2016.02); H02J 50/70 (2016.02); H04B 5/0037 (2013.01); H04B 5/0075 (2013.01); H02J 7/0042 (2013.01); H02J 2007/0096 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7072 (2013.01); Y02T 90/122 (2013.01); Y02T 90/14 (2013.01);
Abstract

An apparatus for wirelessly transferring charging power is provided. The apparatus comprises a ferrite structure. The apparatus comprises a first coil comprising a first conductor wound in a first layer at an outer side of the first coil and wound in a first plurality of stacked layers on an inner side of the first coil. At least one layer of the first plurality of stacked layers on the inner side of the first coil is recessed into the ferrite structure. The apparatus comprises a second coil comprising a second conductor wound in a second layer at an outer side of the second coil and wound in a second plurality of stacked layers on an inner side of the second coil. At least one layer of the second plurality of stacked layers on the inner side of the second coil recessed into the ferrite structure.

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