Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type
Patent
1996-10-24
1999-12-21
Gellner, Michael L.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Superconductive type
335285, 335295, H02F 600
Patent
active
060054603
ABSTRACT:
Magnetic flux trapping clamps are provided that trap or pin the magnetic flux of ring shaped superconductive magnets in a high permeability metallic core located in the bore of the ring. Preferably, the superconductive magnets comprise a single crystal cut into a ring shape. Multiples of the flux-pinned magnets, having high magnetic strength, can be arranged in a variety of arrays for a range of applications. The devices offer several advantages over permanent or electromagnets. The devices easily activated by charging with a cryogenic fluid, to induce the superconductive effect, and deactivated by draining the fluid.
REFERENCES:
patent: 5012216 (1991-04-01), Jin
patent: 5159219 (1992-10-01), Chu et al.
patent: 5513498 (1996-05-01), Ackermann et al.
patent: 5563565 (1996-10-01), Hull
Article; "High Magnetic Flux Trapping by Melt-Grown YBaCuO Superconductors," Japanese Journal of Applied Physics, vol. 30, No. 7A, pp. L 1157-L1159; Jul. 1991.
Article; "Magentic Shielding by Superconducting Y-Ba-Cu-O Prepared by the Modified Quench and Melt Growth (QMG) Process," Japanese Journal of Physics, vol. 31 (1992), Part 1, No. 4, pp. 1026-1032; Apr. 1992.
DeJong, executor by John J.
Garrigus Darryl F.
Hansen, deceased Karl A.
Strasik Michael
Barrera Raymond
Gellner Michael L.
The Boeing Company
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