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

Double row loop-coil configuration for high-speed electrodynamic maglev suspension, guidance, propulsion and guideway directional switching

Patent 5517924 Issued on May 21, 1996. Estimated Expiration Date: Icon_subject July 27, 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

3470828

3664268

3913493

Circuit arrangement for magnetic suspension vehicle systems
Patent #: 3968753
Issued on: 07/13/1976
Inventor: Breitling

Switch for magnetic suspension railroad
Patent #: 3994236
Issued on: 11/30/1976
Inventor: Dull ,   et al.

Air cored, linear induction motor for magnetically levitated systems
Patent #: 5270593
Issued on: 12/14/1993
Inventor: Levi, et al.

Multiple feeder system of feeder sections for feeding ground coils of superconductive magnetically levitated railway Patent #: 5361707
Issued on: 11/08/1994
Inventor: Fujie, et al.

Inventors

Assignee

Application

No. 280962 filed on 07/27/1994

US Classes:

104/286, Construction or composition of suspension elements104/130.02, For levitated vehicle104/282Propulsion means employed to suspend car

Examiners

Primary: Oberleitner, Robert J.
Assistant: Bartz, C. T.

Attorney, Agent or Firm

International Class

B60L 013/02

Abstract

A stabilization and propulsion system comprising a series of loop-coils arranged in parallel rows wherein two rows combine to form one of two magnetic rails. Levitation and lateral stability are provided when the induced field in the magnetic rails interacts with the superconducting magnets mounted on the magnetic levitation vehicle. The loop-coils forming the magnetic rails have specified dimensions and a specified number of turns and by constructing differently these specifications, for one rail with respect to the other, the angle of tilt of the vehicle can be controlled during directional switching. Propulsion is provided by the interaction of a traveling magnetic wave associated with the coils forming the rails and the super conducting magnets on the vehicle.

Other References

  • Vol. 2--System Concept Definition Report for the National Maglev Initiative dtd 30 Sep. 1992 Magneplane International, Inc.--Section 3.2.2.d Magswitch pp. 49-58
  • Electrodynamic Suspension and Linear Synchronous Motor Propulsion for High Speed Guided Ground Transportation--Sep. 1977, Canadian Maglev Group--pp. 77-8
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