Electromagnetic transportation system
Patent 4015540 Issued on April 5, 1977. Estimated Expiration Date: 
April 5, 1994. 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.
April 5, 1994. 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 405194 1020942 2041607 3225228 3513338 3697908 3750275 3894275 InventorAssigneeApplicationNo. 05/573397 filed on 05/01/1975US Classes:104/292, Propulsion by active guideway; e.g., linear synchronous motor, etc.104/138.1, TUBULAR WAY310/13Fixed and movable wound elementsExaminersPrimary: Blix, Trygve M.Assistant: Barefoot, Galen L. Attorney, Agent or FirmAbstractAn electromagnetic transportation system for a vehicle which is adapted to travel along the inside of a tube. The system includes a series of electrical coils about the periphery of the tube which are connected to a three-phase alternating current supply. The vehicle is a capsule adapted to move within the tube and is essentially a ferro-magnetic container. The coils are energized by the three-phase alternating current supply to produce bundles of magnetic energy moving in one direction and the capsule is propelled by the magnetic energy in the same direction. The capsule also includes spaced coil members in order to utilize both radially and axially directed magnetic energy to propel the capsule in the tube and includes means to create a plurality of magnetic pole faces to increase the efficiency of propulsion.Field of SearchPneumatic | |
