Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K—DYNAMO-ELECTRIC MACHINES
H02K27/00—AC commutator motors or generators having mechanical commutator
H02K27/22—AC commutator motors or generators having mechanical commutator having means for improving commutation, e.g. auxiliary fields, double windings, double brushes