Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1985-01-30
1987-02-03
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
336200, H01F 708
Patent
active
046411186
ABSTRACT:
An electromagnet including a coil unit having a plurality of electrically insulative substrates, each having a spiral conductor formed thereon, the substrates being stacked together with the spiral conductors parallel with each other. The conductors of the unit are connected in series with each other so that magnetic fluxes formed of electric currents flowing through the conductors are directed in the same direction at the central positions of the spirals of the spiral conductors, and there are formed holes at the central positions for receiving a ferromagnetic core which is moved in response to a direct electric current passed through the coil unit. A valve may be connected to the ferromagnetic core to form an electromagnetic valve assembly.
REFERENCES:
patent: 2987655 (1961-06-01), McCurdy
patent: 3089106 (1963-05-01), Saaty
patent: 3389355 (1968-06-01), Schroeder
patent: 4067541 (1978-01-01), Hunter
patent: 4102526 (1978-07-01), Hargraves
patent: 4157168 (1979-06-01), Schlagmuller et al.
patent: 4253079 (1981-02-01), Brosh
patent: 4326139 (1982-04-01), Mowbray
Hirose Tokuzo
Inoue Ikuo
Harris George
Hirose Manufacturing Co., Ltd.
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