Patent ID: 8847451
Filing Date: 2014-09-30
Classification: F16C,H02K

Abstract:
1. An electromagnetic actuator comprising: a body having a rotational axis; a first axial pole residing apart from the body, the first axial pole adjacent a first end facing surface of the body and adapted to communicate magnetic flux across a gap with the first end facing surface of the body; a second axial pole residing apart from the body, the second axial pole adjacent a second end facing surface of the body and adapted to communicate magnetic flux with the second end facing surface of the body; a first lamination stack comprising electrically isolated steel laminations stacked in a circumferential direction of the body; an axial backiron; the body, the first axial pole, the second axial pole, the axial backiron, and the first lamination stack magnetically linked and defining an axial magnetic control circuit; and a first radial pole residing apart from the body, the first radial pole adjacent a lateral facing surface of the body and adapted to communicate magnetic flux with the lateral facing surface of the body and at least one of the first axial pole or the second axial pole, the body, the first radial pole and the first axial pole or the second axial pole defining a magnetic bias circuit.