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:
Oct. 17, 2017
Filed:
Feb. 26, 2015
Applicant:
Koninklijke Philips N.v., Eindhoven, NL;
Inventor:
Eberhard Waffenschmidt, Aachen, DE;
Assignee:
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 7/06 (2006.01); H05K 9/00 (2006.01); H01F 27/36 (2006.01); H02J 5/00 (2016.01); H02J 7/02 (2016.01); H01F 38/14 (2006.01); H01F 27/34 (2006.01);
U.S. Cl.
CPC ...
H05K 9/0075 (2013.01); H01F 27/365 (2013.01); H02J 5/005 (2013.01); H02J 7/025 (2013.01); H01F 38/14 (2013.01); H01F 2027/348 (2013.01);
Abstract
An electronic device which is inductively powered or charged has a receiver coil on which a metal object can be placed without causing deterioration of the coil's magnetic field and without generating heat in the metal object. An ultra-thin, flexible, high magnetic permeability metal foil having a thickness of 50 μm or less is provided as a shielding layer between the coil and the object. Radial slits are provided in the shielding layer, which suppress unwanted eddy currents in the layer to reduce power transfer losses and heat generation.