(under subclass 102) Subject matter wherein the dynamoelectric machine is of the type which has plural sets of current collectors.
(1) Note. The usual machine of this type is a rotary converter which has a single field structure, a single armature winding and the armature winding is provided both with a commutator and slip rings, the direct current brushes cooperate with the commutator and alternating current brushes cooperating with the slip rings.
(2) Note. Closely analogous subject matter is found in Class 323, Electricity: Power Supply or Regulation Systems wherein a dynamoelectric machine having plural sets of brushes is used to control voltage magnitude. However, such dynamoelectric machine (e.g., dynamotor) is not a converter since the input and output electrical energy are the same in kind (e.g., both D.C. or both A.C.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
150, for phase conversion systems having a plural current collector type dynamoelectric machine as the converter.
174+, for frequency conversion systems having a plural current collector type dynamoelectric machine as the converter.
SEE OR SEARCH CLASS 323, Electricity: Power Supply or Regulation Systems,
201, 204 for current and voltage magnitude control systems including a dynamoelectric machine having plural sets of current collectors. See (2) Note above.
