Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1975-07-30
1977-03-29
Moose, Harry
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
335234, 335236, 361186, 361191, H01H 4732
Patent
active
040151743
ABSTRACT:
A magnetic device comprising two permanent magnets, armature members forming with said magnets a closed magnetic circuit and an external air gap, and means for reversing the direction of magnetization of one of the magnets, whereby the flux is prevented to close along the magnetic circuit and caused to close through the air gap, or caused to close along the magnetic circuit, the flux in the air gap then being suppressed. The said means consist of two distinct coils wound about the magnets. One of the coils is energized for establishing the flux in the air gap, while the other coil is energized for suppressing the flux in the air gap.
REFERENCES:
patent: 2995637 (1961-08-01), Feiner et al.
patent: 3089064 (1963-05-01), DE Bennetot
patent: 3530454 (1970-09-01), Zocholl
Drucker William Anthony
Le Materiel Magnetique
Moose Harry
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