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. 14, 2015
Filed:
Sep. 28, 2012
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Takashi Urano, Tokyo, JP;
Mitsunari Suzuki, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/10 (2006.01); H04R 3/00 (2006.01);
U.S. Cl.
CPC ...
H04R 3/00 (2013.01); H04R 1/1008 (2013.01); H04R 1/1025 (2013.01);
Abstract
A wireless headphone systemincludes a headphoneand a headphone stand. The headphonehas two ear cupsand. The ear cupincorporates a receiving coil Land a capacitor C. The ear cupincorporates a charge controllerand a secondary batteryThe headphone standincorporates a feeding coil LWhen the headphoneis set in the headphone standAC power is supplied from the feeding coil Lto the receiving coil Land the secondary batteryof the headphoneis charged with the AC power.