Patent ID: 7514832

Claim:
A single field rotor motor comprising, in combination, a stator housing having axially spaced end regions, a shaft rotatably extending through said end regions, a ferromagnetic, laminated rotor mounted on said shaft extending between said end regions having radial sides disposed adjacent said end regions and having spaced salient poles defined on the periphery of said rotor, said rotor poles having a peripheral width, magnetic means creating magnetic fields at said stator housing end regions of axial polarity creating a single polarity of field on all the peripheral rotor poles by means of inducing flux into the sides of the rotor axially across an unchanging air-gap which is constantly at minimum between said magnetic means in said stator housing and said rotor sides, a stator circumscribing said rotor having an inner circumference, a plurality of stator poles defined on said stator inner circumference having faces having a circumferential width, there being twice the number of stator poles than rotor poles, the circumferential width of said stator poles being substantially equal to the peripheral width of said rotor poles and a small radial air gap existing between said rotor and stator poles, each of said stator poles having a coil for creating a magnetic pole force within said stator coil, and circuit means for alternately changing said stator coils to alternately change the polarity of a given stator pole to alternately attract and repel said rotor poles to produce rotation of said rotor.