Dc magnetic propulsion and levitation system for high speed vehicles

Claim 2

A magnetic levitation and propulsion system for a vehicle adapted to travel over an established roadbed comprising: a voltage supply; a plurality of coils spaced along the surface of the roadbed; a plurality of SCR switches, each of said SCR switches being coupled in series with a respective coil; means coupling each of the series coupled SCR switches and coils across the voltage supply, each coil being energized by the voltage supply when the SCR switch in series therewith is gated into conduction; a magnet carried by the vehicle over the coils in the roadbed, the magnet and an energized coil thereunder having a rate of change in mutual inductance therebetween as said magnet is moved over said coil to generate a vehicle propulsion force to propel the vehicle along the roadbed and having a greater rate of change when the trailing portion of said magnet passes over an energized coil so as to induce a counter EMF in said coil having a magnitude at least equal to the output of the voltage supply; and means for sequentially gating the SCR switches into conduction as the vehicle is moved over the roadbed when the coils associated therewith are in a prescribed position relative to the magnet to generate a vehicle levitation force and the vehicle propulsion force, the counter EMF induced in each of the energized coils as the trailing portion of the magnet passes thereover reducing the current in said coil to a magnitude to switch the SCR switch in series therewith into nonconduction.

Claim 3

A magnetic levitation and propulsion system for a vehicle adapted to travel over an established roadbed comprising: a voltage supply; a plurality of coils spaced along the surface of the roadbed; a plurality of SCR switches, each of said SCR switches being coupled in series with a respective coil; means coupling each of the series coupled SCR switches and coils across the voltage supply, each coil being energized by the voltage supply when the SCR switch in series therewith is gated into conduction; a superconducting magnet carried by the vehicle over the coils in the roadbed, the superconducting magnet spanning a plurality of coils, the superconducting magnet and coils thereunder having a rate of change in mutual inductance therebetween when said coils are energized as said superconducting magnet is moved over said coils to generate a vehicle propulsion force to propel the vehicle along the roadbed and having a greater rate of change when the trailing portion of said superconducting magnet passes over an energized coil so as to induce a counter EMF in said coil having a magnitude at least equal to or greater than the output of the voltage supply; and means for sequentially gating on the SCR switches as the vehicle moves over the roadbed when the coils associated therewith are in a prescribed position behind the leading portion of the superconducting magnet to generate vehicle levitation forces and the vehicle propulsion forces, the counter EMF induced in each of the energized coils as the trailing portion of the superconducting magnet passes thereover reducing the current in said coil to a magnitude to switch the SCR switch in series therewith into nonconduction.

Claim 4

A magnetic levitation and propulsion system for a vehicle adapted to travel over an established roadbed comprising: a voltage supply; a plurality of coils spaced along the surface of the roadbed; a plurality of SCR switches, each of said SCR switches being coupled in series with a respective coil; means coupling each of the series coupled SCR switches and coils across the voltage supply, each coil being energized by the voltage supply when the SCR switch in series therewith is gated into conduction; a superconducting magnet carried by the vehicle over the coils in the roadbed, the superconducting magnet spanning a plurality of coils, the superconducting magnet and coils thereunder having a rate of change in mutual inductance therebetween when said coils are energized as said superconducting magnet is moved over said coils to generate a vehicle propulsion force to propel the vehicle along the roadbed and having a greater rate of change when the trailing portion of said superconducting magnet passes over an energized coil so as to induce a counter EMF in said coil having a magnitude at least equal to or greater than the output of the voltage supply; and means for sequentially gating on the SCR switches as the vehicle moves over the roadbed when the coils associated therewith are in a prescribed position behind the leading portion of the superconducting magnet to generate vehicle levitation forces and the vehicle propulsion forces, the counter EMF induced in each of the energized coils as the trailing portion of the superconducting magnet passes thereover reducing the current in said coil to a magnitude to switch the SCR switch in series therewith into nonconduction.

Claim 5

A magnetic levitation and propulsion system for a vehicle adapted to travel over an established roadbed comprising: a voltage supply; a plurality of coils spaced along the surface of the roadbed; a plurality of SCR switches, each of said SCR switches being coupled in series with a respective coil; means coupling each of the series coupled SCR switches and coils across the voltage supply, each coil being energized by the voltage supply when the SCR switch in series therewith is gated into conduction; a rectangular magnet carried by the vehicle over the coils in the roadbed, the magnet being tilted from the horizontal at a specified angle so that the magnet and an energized coil thereunder have a rate of change in mutual inductance therebetween as said magnet is moved over said coil to generate a vehicle propulsion force to propel the vehicle along the roadbed; a plurality of receivers spaced along the roadbed, each receiver being coupled to the gate electrode of a respective SCR switch and having a prescribed position relative to the coil series coupled with said respective SCR switch, each receiver being responsive to a transmitted signal to gate the SCR coupled therewith into conduction; and transmitting means carried by the vehicle for radiating a signal toward the receivers, the transmitting means having a position relative to the magnet so as to sequentially illuminate the receivers to gate on the respective SCR switches and energize the coils in series therewith when said coils are in a prescribed position relative to the magnet to generate vehicle levitation forces and the vehicle propulsion forces, the rate of change in mutual inductance aS the trailing portion of the magnet moves over an energized coil having a magnitude so as to induce a counter EMF in said coil which is at least equal to the output of the voltage supply to switch the SCR switch in series therewith into nonconduction.

Claim 6

A magnetic levitation and propulsion system for a vehicle adapted to travel over an established roadbed comprising: a voltage supply; a plurality of coils spaced along the surface of the roadbed; a plurality of SCR switches, each of said SCR switches being coupled in series with a respective coil; means coupling each of the series coupled SCR switches and coils across the voltage supply, each coil being energized by the voltage supply when the SCR switch in series therewith is gated into conduction; a rectangular magnet carried by the vehicle over the coils in the roadbed, the magnet being tilted from the horizontal at a specified angle so that the magnet and an energized coil thereunder have a rate of change in mutual inductance therebetween as said magnet is moved over said coil to generate a vehicle propulsion force to propel the vehicle along the roadbed; a plurality of receivers spaced along the roadbed, each receiver being coupled to the gate electrode of a respective SCR switch and having a prescribed position relative to the coil series coupled with said respective SCR switch, each receiver being responsive to a transmitted signal to gate the SCR coupled therewith into conduction; and transmitting means carried by the vehicle for radiating a signal toward the receivers, the transmitting means having a position relative to the magnet so as to sequentially illuminate the receivers to gate on the respective SCR switches and energize the coils in series therewith when said coils are in a prescribed position relative to the magnet to generate vehicle levitation forces and the vehicle propulsion forces, the rate of change in mutual inductance aS the trailing portion of the magnet moves over an energized coil having a magnitude so as to induce a counter EMF in said coil which is at least equal to the output of the voltage supply to switch the SCR switch in series therewith into nonconduction.