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 8604644 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 10, 2013

Filed:

Nov. 15, 2012
Applicants:

Eun Seok Park, Yeongtong-gu, KR;

Sang Wook Kwon, Seongnam-si, KR;

Young-tack Hong, Seongnam-si, KR;

Inventors:

Eun Seok Park, Yeongtong-gu, KR;

Sang Wook Kwon, Seongnam-si, KR;

Young-tack Hong, Seongnam-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 38/14 (2006.01); H01F 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A load impedance decision device, a wireless power transmission device, and a wireless power transmission method are provided. At least one of a distance and an angle between two resonators may be measured. A load impedance may be determined based on at least one of the measured distance and the measured angle. When the distance between the two resonators changes, a high power transfer efficiency may be maintained without using a separate matching circuit. Where the load impedance is determined, a test power may be transmitted. Depending on a power transfer efficiency of the test power, the load impedance may be controlled and power may be wirelessly transmitted from the source resonator to the target resonator.


Find Patent Forward Citations

Park, Eun. (2013). Load impedance decision device, wireless power transmission device, and wireless power transmission method (U.S. Patent No. 8604644). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8604644

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