Roadway-powered electric vehicle system
Patent 5669470 Issued on September 23, 1997. Estimated Expiration Date: 
September 23, 2014. 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.
September 23, 2014. 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 Re29994 2589453 3673379 3914562 Induction charging system Roadway for supplying power to vehicles and method of using the same Electromagnetically coupled battery charger Rechargeable battery powered electric car and recharging station therefor Electrical vehicle and method Mass transit systems InventorAssigneeApplicationNo. 238990 filed on 05/05/1994US Classes:191/10, MAGNETIC INDUCTION307/10.1, Automobile320/109Charging station for electrically powered vehicleExaminersPrimary: Merritt, Karen B.Assistant: Lowe, Scott L. Attorney, Agent or FirmForeign Patent References
International ClassB60L 009/00AbstractA roadway-powered electric vehicle system includes: (1) an all-electric vehicle; and (2) a roadway network over which the vehicle travels. The all-electric vehicle has one or more onboard energy storage elements or devices that can be rapidly charged or energized with energy obtained from an electrical current, such as a network of electromechanical batteries. The electric vehicle further includes an on-board controller that extracts energy from the energy storage elements, as needed, and converts such extracted energy to electrical energy used to propel the electric vehicle. The energy storage elements may be charged while the vehicle is in operation. The charging occurs through a network of power coupling elements, e.g., coils, embedded in the roadway. As the vehicle passes over such power coupling elements as it is driven on the roadway network, electrical current is inductively coupled to corresponding onboard power coupling elements, e.g., coils, and used to charge the onboard energy storage devices. The roadway network need only be energized with the power coupling elements at strategic locations. The roadway network may comprise existing roadways and highways that have been modified to include the embedded power coupling elements, e.g., coils.Other References
Field of SearchSYSTEMS OF DISTRIBUTIONConvertible, multiple current source Internal and external Alternating direct Sectional Alternating-alternating MAGNETIC INDUCTION WITH FLUID OR MECHANICAL MEANS TO ACCUMULATE ENERGY (I) DERIVED FROM MOTION OF VEHICLE OR (II) OBTAINED FROM OPERATION OF VEHICLE MOTOR, AND GIVE UP THE ENERGY (1) WHEN NEEDED FOR VEHICLE ACCELERATION OR (2) TO POWER AN AUXILIARY SYSTEM OF THE VEHICLE MOTOR SUPPLIED WITH POWER FROM EXTERNAL SOURCE VEHICLE MOUNTED SYSTEMS Automobile Electric Remote control Non-mechanical control of vehicles from wayside Control of vehicle from leading vehicle | |
