Abstract: The synchronous motor, applicable to battery powered clocks is so designed that the north and south poles, formed on the peripheries of a pair of rotor discs, are bent so as to extend parallel to the arbor and to be staggered on the peripheral surface of the rotor. The gap distance between the north and south poles is larger than that between the poles and the corresponding pole faces of a stator which has a magnetic flux induced therein by an AC energizing circuit, whereby the efficiency of the motor may be improved significantly.
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