Abstract

Power is fed from a power feeding coil L2 to a power receiving coil L3 by magnetic resonance. A VCO 202 alternately turns ON/OFF switching transistors Q1 and Q2 at a drive frequency fo, whereby AC power is supplied to the power feeding coil L2, and then the AC power is supplied from the power …

Legal parties

Party
Inventors (applicants): Takashi Urano
Assignees (initial): TDK Corporation (Tokyo, JP)
Agents: McDermott Will & Emery LLP (attorney)

The application was examined by Rasem Mourad, Rexford Barnie (USPTO dept. 2836)

Claims

  • 1. A wireless power feeder that wirelessly feeds power from a power feeding coil to a power …
  • 2. The wireless power feeder according to claim 1 , wherein the phase detection circuit …
  • 3. The wireless power feeder according to claim 1 , wherein the signal receiving coil …

International priority data

JP: 2010-064379 / Mar. 19, 2010 (national)
JP: 2011-021952 / Feb. 3, 2011 (national)
JP: 2010-071901 / Mar. 26, 2010 (national)
JP: 2011-021953 / Feb. 3, 2011 (national)

Cited documents

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Brief Description of the Drawings

The above features and advantages of the present invention will be more apparent from the following description of certain preferred embodiments taken in conjunction with the accompanying drawings …

Description

Background of the Invention

1. Field of the Invention The present invention relates to wireless power feeding and, more particularly, to power control in the wireless power feeding. 2. Description of Related Art A wireless …

Detailed Description of the Embodiments

Preferred embodiments of the present invention will be described below with reference to the accompanying …

First Embodiment

FIG. 1 is a view illustrating operation principle of a wireless power transmission system 100 according to a first embodiment and a third embodiment to be described later. The wireless …

More details about Wireless Power Feeder, Wireless Power Receiver, and Wireless Power Transmission System

Miscellaneous patent data

The invention description is illustrated by 30 drawings, the claim 1 is exemplary as chosen by the examiner, explained by 30 figures, similar patents are classified under Assembling, due to variation of continuously-variable ohmic resistor, evaporating liquids, Ballasts, e.g. for discharge lamps, Parallel operation of dc generators with converters, e.g. with mercury-arc rectifier, Plural converters, Insulating of windings, Rate of change responsive systems, using discharge tubes only, automatic parallel connection when synchronism is achieved, Responsive to approach or passage of an object, Regulation of the charging current or voltage, Plural diverse load devices, Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings, Miscellaneous Systems, the invention is named Wireless Power Feeder, Wireless Power Receiver, and Wireless Power Transmission System, the exemplary patent drawings are Principle view of a wireless, Wireless Power Feeder, Wireless Power, View illustrating structures of the coils, System configuration view of the wireless, was examined by 2836 USPTO department, the examiners - Rexford Barnie, Rasem Mourad, the assignee organization is TDK Corporation, located in Tokyo (JP), the protection scope is defined by 28 claims, categorized under Electromagnet or Highly Inductive Systems as a primary classification, the patent particularly claims a wireless power feeder that wirelessly feeds power from a power feeding coil…, the agent's company - McDermott Will & Emery LLP, the recorded applicant's name is Urano Takashi, the grant publication date is Sep. 9, 2014, the inventor's name is Takashi Urano, the assignee classification - a foreign company or corporation, the application number is 13/051,184 (U.S.), the grant number is 08829725 (publication number), invented by Takashi Urano, the patent grant was extended by 798 days, the application publication date is Mar. 18, 2011.

Invention classification information

The invention is classified under Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors or choke coils, Systems for supplying or distributing electric power by electromagnetic waves, Near-field transmission systems, e.g. inductive loop type, Fixed inductances not covered by group H01F 17/00, Electromagnet or Highly Inductive Systems, Adaptations of transformers or inductances for specific applications or functions, Circuit arrangements for transfer of electric power between ac networks and dc networks. The designated search classifications include Electromagnet or Highly Inductive Systems, Systems for supplying or distributing electric power by electromagnetic waves.

Patent details
Publication number 08829725
Publication date Sep. 9, 2014
Kind code B2
Application number 13/051,184
Application date Mar. 18, 2011
Application type U
Application series code 13
Extension term 798
National classification 307/104
Total number of claims 28
Exemplary claims 1
Number of drawings 30
Number of figures 30
Terminal disclaimer
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