U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Inductive charging of a moving electric vehicle's battery

Patent 5311973 Issued on May 17, 1994. Estimated Expiration Date: Icon_subject July 31, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3914562

Roadway for supplying power to vehicles and method of using the same
Patent #: 4007817
Issued on: 02/15/1977
Inventor: Bolger, Jr.

Electrically operated vehicle and electrified roadway therefor
Patent #: 4139071
Issued on: 02/13/1979
Inventor: Tackett

Coin operated battery charger and charging system check
Patent #: 4184580
Issued on: 01/22/1980
Inventor: Ellis, Jr.

Electric vehicle battery recharging station
Patent #: 4289226
Issued on: 09/15/1981
Inventor: Wilkinson

Power control system for electrically driven vehicle
Patent #: 4331225
Issued on: 05/25/1982
Inventor: Bolger

Microprocessor electric vehicle charging and parking meter system structure and method
Patent #: 4532418
Issued on: 07/30/1985
Inventor: Meese ,   et al.

Guidance system for inductively coupled electric vehicles
Patent #: 4742283
Issued on: 05/03/1988
Inventor: Bolger ,   et al.

Inductive power coupling with constant voltage output
Patent #: 4800328
Issued on: 01/24/1989
Inventor: Bolger ,   et al.

Roadway power and control system for inductively coupled transportation system
Patent #: 4836344
Issued on: 06/06/1989
Inventor: Bolger

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Inventors

Assignee

Application

No. 922741 filed on 07/31/1992

US Classes:

191/10, MAGNETIC INDUCTION191/15, Normally live section320/108Charger inductively coupled to cell or battery

Examiners

Primary: Huppert, Michael S.
Assistant: Lowe, Scott L.

Attorney, Agent or Firm

Foreign Patent References

  • 0253345 EP 01/13/1988
  • 0289868 EP 11/13/1988
  • 3202994 JP 09/13/1991
  • 2158308 GB 11/13/1985

International Classes

B60L 009/02
H01M 010/44

Abstract

A battery of an electric vehicle is inductively charged while the electrical vehicle is moving, using a magnetic field along different portions of an extended linear distance and an inductive coil mounted on an electric vehicle, by having the electric vehicle, as it traverses the different portions of the extended linear distance, move within the influence of the magnetic field. An apparatus senses progress of the electric vehicle along the extended linear distance. The apparatus produces the magnetic field by a power switch bank connected to an array of inductive coils.

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