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AssigneeThe University of Chicago
InventorsYung Sheng Cha, John R. Hull, Thomas R. Askew
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A system and method of controlling movement of magnetic material with at least first and second high temperature superconductors at spaced locations. A plurality of solenoids are associated with the superconductors to induce a persistent currents in preselected high temperature superconductors establishing a plurality of magnetic fields in response to pulsed currents introduced to one or more of the solenoids. Control mechanism in communication with said solenoids and/or said high temperature superconductors are used to demagnetize selected ones of the high temperature superconductors to reduce the magnetic fields substantially to zero. Magnetic material is moved between magnetic fields by establishing the presence thereof and thereafter reducing magnetic fields substantially to zero and establishing magnetic fields in other superconductors arranged in a predetermined configuration.
A method of controlling movement of magnetic material, comprising providing at least first and second high temperature superconductors at spaced locations, magnetizing at least one of said high temperature superconductors to establish a first magnetic field, magnetizing at least one other of said high temperature superconductors to establish a second magnetic field, and demagnetizing at least one of said high temperature superconductors to reduce the first magnetic field substantially to zero, whereby magnetic material near said first magnetic field will be attracted thereto during the presence thereof and when said first magnetic field is reduced substantially to zero the magnetic material will be attracted to said second magnetic field, thereby causing movement of magnetic material toward and away from said first and second magnetic fields.
A method of controlling movement of magnetic material, comprising providing at least first and second high temperature superconductors at spaced locations, introducing a persistent current in at least one of said high temperature superconductors to establish a first magnetic field, introducing a persistent current in at least one other of said high temperature superconductors to establish a second magnetic field, and demagnetizing at least one of said high temperature superconductors to reduce the first magnetic field substantially to zero, whereby magnetic material near said first magnetic field will be attracted thereto during the presence thereof and when said first magnetic field is reduced substantially to zero then the magnetic material will be attracted to said second magnetic field, thereby causing movement of magnetic material toward and away from said first and second magnetic fields.
A system of controlling movement of magnetic material, comprising at least first and second high temperature superconductors at spaced locations, a plurality of solenoids associated with said superconductors to induce a persistent currents in preselected high temperature superconductors establishing a plurality of magnetic fields in response to pulsed currents introduced to one or more of said solenoids, and control mechanism in communication with said solenoids and/or said high temperature superconductors to demagnetize selected ones of said high temperature superconductors to reduce the magnetic fields substantially to zero, whereby magnetic material is moved between magnetic fields by establishing the presence thereof and thereafter reducing magnetic fields substantially to zero and establishing magnetic fields in other superconductors arranged in a predetermined configuration.
Dependencies are inferred from the claim text.