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US Patent 6044770 - Integrated high speed MAGLEV system

US Patent Issued on April 4, 2000
Estimated Patent Expiration Date: Icon_subject June 23, 2015Estimated 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.
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Abstract

An integrated MAGLEV (Magnetic Levitated Vehicle) system consists of permanent or preferably superconducting vehicle-mounted magnets which interact with both active and induced track-based currents. The magnets on the vehicle which are used for propulsion serve the dual purpose of realizing both levitation and lateral stabilization (guidance). The contribution offered by this invention is that it is able to provide propulsion, levitation, and guidance using a single type of track-based coil interacting with a singular type of magnetic field which is affixed to the vehicle. The realization of multiple functions with a single coil reduces the cost and enhances the efficiency of this MAGLEV system. In the main embodiment of this invention, propulsion currents are injected into brushes sliding along brush contact surfaces on the rail. Motion induced currents in the coils realize both the necessary levitation and guidance forces for the vehicle. The propulsion system is basically a linear DC motor and requires no power handling along the track. Necessary operating power can either be carried on the vehicle or collected by a third rail pickup system. All coils in the track are supported by a reinforced recycled plastic matrix (polyvinyl fiberglass) or similar material.

Inventors

Assignee

Application

No. 493332 filed on 06/23/1995

US Classes:

104/282, Propulsion means employed to suspend car104/284, Including means to sense or control car position or attitude with respect to guideway104/285, With cooling means104/286, Construction or composition of suspension elements104/292, Propulsion by active guideway; e.g., linear synchronous motor, etc.310/12Linear

Field of Search

104/282, Propulsion means employed to suspend car104/284, Including means to sense or control car position or attitude with respect to guideway104/285, With cooling means104/286, Construction or composition of suspension elements104/290, Linear motor104/292, Propulsion by active guideway; e.g., linear synchronous motor, etc.104/294, Construction or composition of motor elements310/12, Linear310/13Fixed and movable wound elements

Examiners

Primary: Morano, S. Joseph

Attorney, Agent or Firm

US Patent References

2412512, 2666879, 3233559, 3470828, 3662689, 3771033, 3806782, 3834317, 3904941, 3913493, 4299173, Levitation and guide mechanism for curved track in inductive repulsion type vehicle magnetic levitation and guide system
Issued on: 11/10/1981
Inventor: Arima ,   et al.
4641065, Moving coil type linear motor
Issued on: 02/03/1987
Inventor: Shibuki ,   et al.
4646651, Floating apparatus for attractive magnetic floater
Issued on: 03/03/1987
Inventor: Yamamura ,   et al.
4779538, Levitation-propulsion mechanism for inductive repulsion type magnetically levitated railway
Issued on: 10/25/1988
Inventor: Fujiwara ,   et al.
4913059, Levitation, propulsion and guidance mechanism for inductive repulsion-type magnetically levitated railway
Issued on: 04/03/1990
Inventor: Fujie, et al.
5085149, Ground vehicle suspension and guidance and electromagnetic system thereof with multiple surface arcuate reaction rails
Issued on: 02/04/1992
Inventor: Huson
5628252Method and apparatus for combined levitation and guidance along guideway curvature in electrodynamic magnetically levitated high speed vehicle
Issued on: 05/13/1997
Inventor: Kuznetsov

International Class

B60L 013/04

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