Linear motor

Details Linear motor Linear motor

1996-03-29

1998-08-18

Stephen, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

310 12, H02K 4102

Patent

active

057961867

ABSTRACT:
A single sided servo apparatus comprises a linear motor and a longitudinal carriage which is connected to the linear motor at one end thereof. The linear motor comprises a stator including field magnets arranged linearly and a movable piece including armature coils. The field magnets have a trapezoid-like magnetic flux distribution. An arrangement pattern of the field magnets has a relative tilted angle to an arrangement pattern of the armature coils, so that a free end of the carriage precedes the other end thereof connected to the linear motor. Then, the thrust has a small variation and generates a stable thrust of the servo apparatus.

REFERENCES:
patent: 3829746 (1974-08-01), Van et al.
patent: 4025810 (1977-05-01), Field
patent: 4868431 (1989-09-01), Karita et al.
patent: 4873462 (1989-10-01), Harned
patent: 4912746 (1990-03-01), Oishi
patent: 5081381 (1992-01-01), Naraski
patent: 5229670 (1993-07-01), Kagawa
patent: 5691582 (1997-11-01), Lucas et al.

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