Abstract: Antifriction bearings include circumferential as well as axial flux paths that the flux of four identical-polarity magnetic poles follows about an annular stator having annular end-pieces that enables a square law reduction in rotor eddy current effects over the heretofore known magnetic bearings. In one embodiment, control coils alone provide magnetic suspension along orthogonal X, Y axes, and in another embodiment, combination control and bias coils cooperate to provide magnetic suspension along the orthogonal X, Y axes. The stator and rotor are preferably constituted, in part, of a lamination of high magnetic permeability material.

Abstract: A dynamoelectric machine having a large magnetic gap and flexible printed circuit phase windings includes a multi-pole samarium cobalt magnet assembly consisting of radially aligned magnets and circumferentially positioned interpole magnets attached to a soft iron ring for providing radially directed magnetic poles of alternating polarity, and a printed circuit winding assembly attached to a soft back iron sleeve for providing electromagnetic poles. The printed circuit winding assembly comprises a lamination of selectively aligned and interconnected printed circuit phase windings, each having serially connected printed circuit coils of the same phase. The winding and magnet assemblies are separated by a small mechanical gap to allow their relative rotation.