Patent ID: 6369475
Filing Date: 2002-04-09
Classification: H02K

Abstract:
In a motor, comprising:a rotor; at least two magnetic poles made of a magnetically inductive material surrounded by a field winding and arranged to generate a magnetic field which, by interaction with the rotor, causes the rotor to rotate; and a casing consisting of two end casings made of a magnetically inductive material for holding said rotor at axially opposed ends of the rotor and for retaining said poles, said casing serving as a sole means of support for said poles and said rotor; the improvement wherein each of said end casings is a C-shaped member made of a magnetically inductive material which forms a means for providing a respective axial magnetization path between said poles, one on each side of the poles, said respective axial magnetization paths being the only magnetization paths between said poles, wherein said two magnetic poles are clamped between ends of said end casings such that said poles extend transversely relative to said end casings, and wherein said C-shaped members thereby form a means for exposing the rotor in order to ventilate the rotor.