Variable reluctance stepper motor

Details Variable reluctance stepper motor Variable reluctance stepper motor

1978-07-20

1981-08-25

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

310 49R, H02K 3700

Patent

active

042861802

ABSTRACT:
A variable reluctance stepper motor including cooperating fixed and moving structures having tooth-like patterns of equal pitch but with the fixed and moving teeth having different lengths, measured in the direction of movement. The smaller teeth are divided into groups which are offset from one another by fractions of a tooth pitch to provide a bi-directional motor capable of being stepped from one position to the next with the teeth tending to produce force in the desired direction carrying essentially all of the flux and the teeth tending to produce force in the opposite direction carrying essentially no flux. Methods and techniques are also disclosed for fabricating tooth structures and bearing systems.

REFERENCES:
patent: 3869625 (1978-03-01), Sawyer
patent: 3894275 (1978-07-01), Baumans et al.
patent: 4075539 (1978-02-01), Wada
patent: 4190779 (1980-02-01), Schaeffer
IBM Tech. Disclosure Bulletin, "Linear Incremental Motor", Thompson, vol. 6, No. 9, 2/64, pp. 19-20.

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