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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
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FR65136D1954-01-161954-01-16Dispositif pour empêcher la formation d'étincelles dans les machines à courant alternatif à collecteur
ExpiredFR65136E
(fr)