Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1976-03-25
1977-11-29
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
H01F 1300
Patent
active
040608450
ABSTRACT:
This invention is concerned with a portable demagnetizer which includes a demagnetizing head supported within a hand held housing. Also contained within the housing is a variable control for applying voltages of decreasing step-less magnitude to the demagnetizing head; and means are also provided to apply a step-less alternating current power to the demagnetization head while voltages of decreasing magnitude are applied to the demagnetizing head. The housing is provided with a control means on the outside thereof so that the demagnetizer may be hand held and varied at the same time by a single individual user, particularly because of a minimum of parts and the use of step-less decreasing voltage magnitudes and the use of step-less alternating current power, which is applied to the demagnetizing head. Similar results can be achieved by slowly moving the work away from the alternating field.
REFERENCES:
patent: 2106233 (1938-01-01), Beechlyn
patent: 2826642 (1958-03-01), Lyon et al.
The Magneraser -- advertisement of Amplifier Corp. of America -- 1951.
Bowers Paul E.
Phadke Mukund A.
Dropkin Robert F.
Gioia Vincent G.
Moose Jr. Harry E.
The Arnold Engineering Company
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