Patent ID: 7911102
Filing Date: 2011-03-22
Classification: H02K,Y10T

Abstract:
1. A magnetic coupler with hysteresis ( 1 ) comprising an inductor sub-assembly ( 2 ) and an armature sub-assembly ( 6 ) suitable for rotating relative to one another, the inductor sub-assembly having a plurality of magnetic poles and the armature sub-assembly ( 6 ) having one or more permanent armature magnets with hysteresis ( 11 , 12 ), wherein each armature magnet is made in the form of a crown in a single piece of a magnetic material with vertical hysteresis cycle and comprises through-slots (F 1 -F 4 ) for attenuating radial currents, each extending in the direction of the circumferential spread of the crown, wherein there is a set of offset slots (F