Patent ID: 8492953

Claim:
A permanent magnet direct current motor comprising: a wire wound salient pole rotor having a winding guide with a substantially uniform cross-sectional thickness and a free end, and extending radially outwardly from a radially inner surface of a single open ended winding tunnel formed between adjacent salient poles of the rotor, wherein the winding guide is structured and arranged to separate a radially inner portion of the winding tunnel into different sides and to restrain plural wire windings wound about the adjacent salient poles of the rotor from entering into an opposite inner portion of the single open ended winding tunnel, wherein the winding guide comprises a vane located within each winding tunnel, each vane extending along the single open ended winding tunnel and extending radially outwardly from a radially inner surface of the winding tunnel, wherein the salient poles are substantially T-shaped having a radially extending spoke extending from a central region and a circumferentially extending pole head foaming a pole face facing radially outwardly, each pole head extending between circumferentially spaced tips, a winding gap being fanned between tips of adjacent pole heads and the winding tunnels being formed between the central region and the spoke and pole head of adjacent poles and being open radially through the winding gap, wherein each vane extends along a radial plane that bisects the winding tunnel and one of the pole heads that is different from the adjacent pole heads that form the winding tunnel, projects towards the winding gap and has a radial height sufficient to separate adjacent windings within the winding tunnels but equal to or less than a maximum radial height being defined by intersection of the radial plane with a line extending from one of the tips between which the winding gap is formed to one tip of the one of the pole heads bisected by the radial plane, and wherein the one of the tips between which the winding gap and the one tip of the one of the pole heads bisected by the radial plane are located on different sides bisected by the radial plane.