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:
Sep. 20, 2022
Filed:
May. 09, 2019
Applicant:
Oticon A/s, Smørum, DK;
Inventors:
Alessandro De Masi, Smørum, DK;
Lars Pinnerup Frederiksen, Smørum, DK;
Jens Troelsen, Smørum, DK;
Lars Riemer, Smørum, DK;
Assignee:
Oticon A/S, Smørum, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H02J 50/10 (2016.01); H01F 27/28 (2006.01); H01Q 1/24 (2006.01); H02J 7/02 (2016.01); H01F 27/36 (2006.01);
U.S. Cl.
CPC ...
H02J 50/10 (2016.02); H01F 27/2828 (2013.01); H01F 27/363 (2020.08); H01F 27/366 (2020.08); H01Q 1/24 (2013.01); H02J 7/025 (2013.01);
Abstract
A charger for charging a device to be inductively charged is described, comprising an excitation coil made of an electrical conductor wound around a toroidal core to excite a magnetic field inside the toroidal core, the toroidal core having an air-gap between two end-faces of the toroidal core, wherein the two end-faces are facing each other, and the winding density of the excitation coil along the toroidal length of the toroidal core is higher in the vicinity of the respective end-faces as compared to the remaining parts of the toroidal core.