Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1987-12-14
1989-07-11
Gellner, Michael L.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
335234, 335306, 3542341, H01F 708
Patent
active
048477265
ABSTRACT:
A magnetic actuator is disclosed in which a member formed of a magnetic material is movable relative to a frame along a predetermined path. Magnets are located on the frame at opposite ends of the path. In order to keep the mass of the movable member as small as possible, no magnetic elements are located on the member. Permanent magnets function with the magnets at opposite ends of the path to move the member, support the member along one degree of freedom, and hold the member in a rest position.
REFERENCES:
patent: 3458769 (1969-07-01), Stampfli
patent: 3634735 (1972-01-01), Komatsu
patent: 3987473 (1976-10-01), Kondo
patent: 4011003 (1977-03-01), Dragt
patent: 4051499 (1977-09-01), Kondo
patent: 4313659 (1982-02-01), Saito et al.
patent: 4458227 (1984-07-01), Petersen
patent: 4514065 (1985-04-01), Carrera
Eastman Kodak Company
Gellner Michael L.
Schaper Donald D.
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