Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1994-10-17
1996-05-14
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335216, 324318, 324319, G01V 300
Patent
active
055171699
ABSTRACT:
A superconductive magnet with magnetic shielding has an annularly-cylindrical-shaped housing whose first end wall and outer cylindrical wall are magnetizable (e.g., iron) walls and whose inner cylindrical wall is a non-magnetizable wall. At least one main superconductive coil is positioned within the housing and carries an electric current in a first (e.g., clockwise) direction. An annular first permanent magnet is positioned outside the housing longitudinally proximate the first end wall. The first permanent magnet has a number of equivalent ampere turns and has a magnetic field direction oriented parallel to the axis pointing towards the second end wall so that its magnetic field longitudinally pulls the stray magnetic field of the superconductive coil(s), which leaves the magnet's bore, inward to be captured by the iron first end wall.
REFERENCES:
patent: 4724412 (1988-02-01), Kalafala
patent: 4924198 (1990-05-01), Laskaris
patent: 5237300 (1993-08-01), Ige et al.
patent: 5291169 (1994-03-01), Ige et al.
patent: 5309106 (1994-05-01), Miyajima et al.
"Open MRI Magnet with Superconductive Shielding", by E. T. Laskaris, U.S. Patent Application Serial No. 08/260,433, filed Jun. 15, 1994.
Chari Madabushi V.
Dorri Bizhan
Kliman Gerald B.
Laskaris Evangelos T.
Ogle Michele D.
Barrera Raymond M.
Erickson Douglas E.
General Electric Company
Picard Leo P.
Webb II Paul R.
LandOfFree
Superconducting magnet with magnetic shielding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Superconducting magnet with magnetic shielding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconducting magnet with magnetic shielding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1898999