Multi-pole rotor particularly for small and miniature electric generators and motors
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United States of America Patent
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-
Apr 23, 1985
Grant Date -
N/A
app pub date -
Nov 9, 1977
filing date -
Jun 15, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotor for small motors, or generators, having circumferentially arranged segmental poles which extend over the entire axial length of the rotor can be fabricated by molding a pair of elements from particulate magnetic material of high coercivity with a binder in the shape of identical crown gears; the rotor being completed by arranging the elements on a shaft with the toothed portions facing each other in interfitting engagement. Other modifications are disclosed in which the pole pieces may be formed separately from, or integrally with, a radial pole carrier, and the pole carrier may be in the shape of a spool with the segmental pole pieces assembled thereon.
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