Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1997-11-12
2000-07-04
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335220, H01F 700
Patent
active
060844922
ABSTRACT:
A bistable permanent-magnet actuator is disclosed having a tailored switching/position force characteristic, with an adequate, modifiable holding force in the end positions. The actuator is characterized in that the yoke is formed by two parts that are mounted so as to face each other and are separated by two gaps. The dimensions of the air gaps may be tailored to obtain intended characteristics.
REFERENCES:
patent: 3178151 (1965-04-01), Caldwell
patent: 3381181 (1968-04-01), Weathers
patent: 3783423 (1974-01-01), Mater et al.
patent: 4422060 (1983-12-01), Matsumoto et al.
patent: 4751587 (1988-06-01), Green, Jr.
Cereda Carlo
Moriconi Giorgio
Secondo Giulio
ABB Research Ltd.
Donovan Lincoln
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