Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Reexamination Certificate
2008-01-29
2008-01-29
Enad, Elvin (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
C335S216000, C062S051100
Reexamination Certificate
active
11476700
ABSTRACT:
An object of the present invention is to provide a MRI superconductive magnet enables sharp images representing patients' health states to be produced.[Means for Achieving the Object]A MRI superconductive magnet having a superconductive coil, a liquid vessel of liquid helium used to cool the superconductive coil, a heat shield to accommodate the liquid vessel therein, a vacuum chamber to accommodate the heat shield therein, a load supporting body for supporting the superconductive coil from the vacuum chamber and securing the superconductive coil, a second cold part of a multi-stage refrigerator for cooling a heat exchanger to condense evaporated helium gas, and a first cold part of the multi-stage refrigerator for cooling the heat shield, wherein a magnetic shield is provided from the first cold part of the multi-stage refrigerator to an outer periphery of the second cold part of the multi-stage refrigerator.
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Ando Ryuya
Nemoto Takeo
Watanabe Hiroyuki
Enad Elvin
Hitachi , Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Musleh Mohamad A
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