U.S. patents available from 1976 to present.
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Magnetodynamic levitation and stabilizing selfregulating system

Patent 5652472 Issued on July 29, 1997. Estimated Expiration Date: Icon_subject December 19, 2015. 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

3834317

Moving-coil linear motor
Patent #: 5072144
Issued on: 12/10/1991
Inventor: Saito, et al.

Self-adjusting magnetic guidance system for levitated vehicle guideway
Patent #: 5140208
Issued on: 08/18/1992
Inventor: Tozoni

Magnetic levitation self-regulating systems
Patent #: 5218257
Issued on: 06/08/1993
Inventor: Tozoni

Magnetic levitation self-regulating systems having enhanced stabilization forces
Patent #: 5319275
Issued on: 06/07/1994
Inventor: Tozoni

Multiple magnet positioning apparatus for magnetic levitation vehicles Patent #: 5388527
Issued on: 02/14/1995
Inventor: Thornton

Inventor

Application

No. 575065 filed on 12/19/1995

US Classes:

310/90.5, Magnetic bearing104/281, MAGNETICALLY SUSPENDED CAR104/282, Propulsion means employed to suspend car104/283, By permanent magnets only310/12Linear

Examiners

Primary: Dougherty, Thomas M.
Assistant: Mullins, B.

International Classes

H02K 007/09
B60L 013/10

Abstract

The proposed Magneto-Dynamic Levitation and Stabilizing Self-Regulating System (MDLSS) is designated for the stable flight of a heavy body along a given trajectory and can be employed for the magnetic levitation of vehicles and cars in high-speed ground transportation systems and for self-regulating magnetic bearings, various devices for ground acceleration, and also in the launching of space ships, missiles, and other technologies. The MDLSS system includes identical unique units connected rigidly with each other by non-magnetic ties and oriented relative to each other such that de-stabilizing forces created in one unit are compensated by stabilizing forces created in another unit once the equilibrium has been violated. Each of the units contains two extended steel cores (C-shaped in their cross-section), both lateral surfaces of which are covered by non-magnetic metallic screens, and a magnet assembly placed symmetrically in the air gap between the tips of the cores. The de-stabilizing forces are substantially decreased and the stabilizing forces are considerably increased, due to sharpening of the tips, using the saturated steel in the backs of the cores, and employing non-linear magnetic features of the saturated steel.

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