Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – For magnetizing or demagnetizing
Patent
1985-10-29
1987-01-20
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
For magnetizing or demagnetizing
335300, H01F 1300
Patent
active
046382801
ABSTRACT:
A magnetizing device for generating magnetic poles of alternating polarity in a magnetic body includes a supporting plate of electrically insulating material having a surface formed to closely conform with the surface of the magnetic body and an electrically conductive array of low electrical resistivity which includes magnetized sections of wire, or rod, recessed in the insulating plate and positioned in such a manner as to generate the desired magnetic poles in a magnetic body when supported by the plate when the array is subjected to a high-intensity unidirectional current, the array also including cooling sections of wire, or rod, twisted in the form of a double helix, interspersed between the magnetizing sections and disposed away from the magnetic body. The electrical array may be formed by a series of short lengths of wire, or rods, the respective ends of the short lengths being twisted together to form the cooling sections. To reduce electrical resistivity and twisted portions may be bonded by soldering or brazing and the cooling sections may project through the insulating plate to be enclosed in a cooling chamber.
REFERENCES:
patent: 3335377 (1967-08-01), Kohlhagen
Steingroever Dietrich
Steingroever Erich
Gell Harold
Harris George
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