Patent ID: 9461517
Filing Date: 2016-10-04
CPC Classification: H02K

Claim Text:
1. An electrical motor for a submersible machine, comprising a stator unit having a stator core, and a rotor unit rotatably arranged in said stator unit and having an axially extending center axis, the rotor unit comprising a rotor core and at least one permanent magnet, the rotor core having an outer diameter that is smaller than an inner diameter of said stator core, the rotor unit comprising a brake means, the radially outer surface of the brake means inscribed on a circle having a diameter greater than the outer diameter of the rotor core, and, in an unloaded state of the brake means, equal to or greater than the inner diameter of the stator core, at least the outer surface of the brake means composed of rubber, and at least a part of the brake means arranged to abut against an inner surface of the stator core upon mutual axial displacement of the rotor unit and the stator unit, and in a mounted state of the rotor unit in the stator unit, the brake means spaced apart from the stator core and positioned in a recessed region of the rotor core.