Closed-path linear motor

Details Closed-path linear motor Closed-path linear motor

1998-04-29

1999-11-30

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Linear

318135, H02K 4100

Patent

active

059947985

ABSTRACT:
A linear motor path forms a closed figure. Contactless power control and position feedback permit a linear motor stage to traverse the closed figure without interference from trailing wires. One embodiment of the closed figure includes a racetrack pattern with straight runs joined by curved ends. Axes of armature windings are skewed to lie across the path in the curved ends to maintain force on the linear motor stage. Other embodiments of the invention includes multilevel paths wherein one portion of the path crosses over another portion of the path. Disclosure is made of a linear motor stage supported below the path by magnetic attraction between permanent magnets on the stage and magnetic material in the path.

REFERENCES:
patent: 4825111 (1989-04-01), Hommes et al.

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