Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type
Patent
1994-11-03
1995-06-13
Tolin, Gerald P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Superconductive type
335300, 336DIG1, 505705, 505879, 62 511, H01F 100, H01F 500, H01F 706, F25B 1900
Patent
active
054247020
ABSTRACT:
A beam member which is installed at diametral portion in a ring shape superconducting coil container for supporting hoop stress of the coil, or a portion of radiant heat shield covering the beam member, is partly or entirely composed of electrical insulators or high resistivity materials. In accordance with the above composition, eddy current which is generated in the coil container when the superconducting coil container crosses magnetic field caused by eddy current which is generated in the radiant heat shield when the radiant heat shield crosses strong magnetic field caused by the superconducting coils with relative vibration of the radiant heat shield to the superconducting coil by a dynamic cause can be suppressed. Accordingly, heat generation in the superconducting coil container can be reduced, and consequently, generation of quenching can be prevented.
REFERENCES:
patent: 3360692 (1967-12-01), Kafka
patent: 4300360 (1981-11-01), Chanin
patent: 4640005 (1987-02-01), Mine
patent: 4833434 (1989-05-01), Takechi
patent: 5019247 (1991-05-01), Purcell
patent: 5065583 (1991-11-01), Sasaki
Fukumoto Hideshi
Kameoka Yoko
Sonobe Tadasi
Suzuki Fumio
Takizawa Teruhiro
Hitachi , Ltd.
Ryan Stephen T.
Tolin Gerald P.
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