Patent ID: 7091638
Filing Date: 2006-08-15
Classification: H02K

Abstract:
1. A submersible motor unit for use in driving a pump comprising: a housing that extends along a longitudinal axis and defines an interior chamber; a stator at least partially enclosed by said housing within a stator chamber; a rotor rotatably supported by a bearing assembly and at least partially enclosed by said stator; and an end-wall assembly comprising a hub with a flange that defines at least a portion of a channel for receiving a capacitor, wherein a bearing assembly is coupled to the hub and the hub comprises a plurality of segments each having a plurality of different inner diameters, wherein each segment of the hub having different inner diameter is separated by a transition region, and wherein the capacitor is located adjacent to the end-wall assembly and within the chamber when the end-wall assembly is installed on the motor unit such that the capacitor is at least partially enclosed by the housing.