Patent ID: 9209672
Filing Date: 2015-12-08
Classification: H02K

Abstract:
1. Direct-current electric motor having two pairs of poles, comprising a rotatable armature including a lamination stack which defines an even number of slots at least equal to eight and which has, associated therewith, a commutator with an even number of segments, and a distributed closed winding, the conductors of which extend into said slots and are connected to the segments of the commutator in a predetermined manner; and wherein the winding of the armature comprises a lap-type winding section or coil connected to two adjacent segments of the commutator and, in series therewith, a plurality of wave-type winding sections or coils; all of said winding sections or coils encompassing a same number of slots; wherein the lamination stack of the armature has a shape which is symmetrical about its axis and has twenty radial teeth between which twenty slots are correspondingly defined, the commutator having twenty segments.