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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 10110067 B1

PDFFull Text
Date of Patent:
Oct. 23, 2018

Filed:

Oct. 29, 2013

Power transmission system

Applicant:

Equos Research Co., Ltd., Tokyo, JP;

Inventors:

Hiroyuki Yamakawa, Hokkaido, JP;

Kenichiro Sato, Tokyo, JP;

Assignee:

EQUOS RESEARCH CO., LTD., Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Rexford Barnie

Assistant Examiner:

Toan Vu

Int. Cl.
CPC ...
H01F 37/00 (2006.01); H02J 50/12 (2016.01); H02J 7/02 (2016.01); H01F 38/14 (2006.01); B60L 11/18 (2006.01); H01F 27/36 (2006.01); H02J 17/00 (2006.01);
U.S. Cl.
CPC ...
H02J 50/12 (2016.02); B60L 11/182 (2013.01); B60L 11/1824 (2013.01); B60L 11/1846 (2013.01); H01F 27/36 (2013.01); H01F 38/14 (2013.01); H02J 7/025 (2013.01); H02J 17/00 (2013.01); B60L 2210/10 (2013.01); B60L 2210/30 (2013.01); B60L 2210/40 (2013.01); B60L 2250/12 (2013.01); B60L 2250/16 (2013.01); B60L 2270/147 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7072 (2013.01); Y02T 10/7216 (2013.01); Y02T 10/7241 (2013.01); Y02T 90/121 (2013.01); Y02T 90/122 (2013.01); Y02T 90/127 (2013.01); Y02T 90/128 (2013.01); Y02T 90/14 (2013.01); Y02T 90/163 (2013.01); Y02T 90/169 (2013.01); Y04S 30/14 (2013.01);
Abstract

A power transmission system that can prevent a plunge in power transmission efficiency even when there is a positional shift of a power reception antenna with respect to a power transmission antenna. A power transmission system includes: a power transmission antenna that includes a wound power transmission coil that is placed on the ground; a power reception antenna that is disposed in such a way as to face the power transmission antenna, includes a wound power reception coil, and receives electric energy from the power transmission antenna via an electromagnetic field, wherein an area of a first projection plane that is formed by the power transmission coil in a vertical direction with respect to a horizontal plane is larger than an area of a second projection plane that is formed by the power reception coil in the vertical direction with respect to the horizontal plane.

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