Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1985-04-15
1986-11-18
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335216, H01F 500
Patent
active
046238646
ABSTRACT:
A 4 coil type air core coil magnet used for NMR imaging apparatus, wherein each coil assembly comprises a plurality of pancake coil elements in layers, and in each of the coil elements the configuration of a predetermined portion and the winding length of the end portion is selectively controlled and connecting wiring between each coil element is parallel to the axis of the four coil assemblies, whereby highly uniform magnetic fields are obtained.
REFERENCES:
patent: 3281737 (1966-10-01), Swartz
patent: 3333331 (1967-08-01), Swartz
patent: 3440585 (1969-04-01), Freeman
patent: 3613006 (1971-10-01), Kantrowitz et al.
Inoue Yuji
Iwaoka Hideto
Harris George
Kojima Moonray
Yokogawa Hokushin Electric Corporation
Yokogawa Medical Systems, Ltd.
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