Linear motor and driving apparatus using the same

Details Linear motor and driving apparatus using the same Linear motor and driving apparatus using the same

1989-08-25

1991-02-12

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

336208, 360 7813, H02K 4100

Patent

active

049926845

ABSTRACT:
A linear motor device having a magnet, a first yoke for holding the magnet in a direction perpendicular to the magnetic flux in the clearance thereof, a second yoke disposed parallel to the first yoke so that there may be obtained a magnetic closed circuit of the magnetic flux, a third yoke fixed between the opposite ends of the second yoke and the first yoke, and a coil bobbin holding thereon a coil wound in a direction which intersects the magnetic flux, and provided with a driving coil movable along the first yoke extending through the coil bobbin upon electrical energization of the coil, characterized in that the thickness of that portion of the coil bobbin which intervenes between the first yoke and the magnet is restricted so that the interval kept between the first yoke and the magnet can be set on the basis of the thickness of the wound lamination of the coil.

REFERENCES:
patent: 4864170 (1989-09-01), Eguchi

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