Patent ID: 8674580
Filing Date: 2014-03-18
Classification: H02K,Y10T

Abstract:
1. An electric machine comprising: a stator; a rotor defining a rotational axis and having a rotor core, the rotor core being formed by a stack of laminations wherein a first lamination forms a first axial end of the rotor core and wherein one of the stack of laminations includes at least one tab projecting axially beyond the first axial end; an end ring disposed on the rotor core at the first axial end, the end ring being formed of a conductive material and being in electrical communication with a plurality of axially extending conductive elements supported on the rotor core; and wherein the tab is coupled with the end ring wherein rotation of the rotor about the axis generates centrifugal forces acting on the end ring and the tab resists a portion of the centrifugal forces.