(under the class definition) Inductor devices comprising plural inductor means arranged structurally and/or by internal connection for use in a two or more phase electrical system.
(1) Note. The claims must limit the device to use in a polyphase system by including some structure or electrical connection which is not of general utility but is specifically for use in a polyphase system to be classified herein.
(2) Note. The search should extend to the appropriate subclasses below for inductor structure which may be used with polyphase current but which is of generally utility (e.g., multiple coil reactors and transformers with plural primary and secondary windings).
SEE OR SEARCH CLASS
307, Electrical Transmission or Interconnection Systems,
13+, for plural load systems of the polyphase type. 310, Electrical Generator or Motor Structure, appropriate subclasses under
10, for dynamoelectric machine structure of the polyphase type.
323, Electricity: Power Supply or Regulation Systems, appropriate subclasses for systems in which a single source of supply is connected to a single output circuit and the system includes means for controlling only the magnitude of the current, the voltage and/or the phase angle between the current or voltage in the system. The single source of supply may be a polyphase source. Also see
44+, for miscellaneous polyphase transformer systems, and subclasses 63+ for the miscellaneous polyphase impedance (including inductive impedance) systems.
331, Oscillators,
45, for polyphase output oscillator systems utilizing polyphase inductor structure.
363, Electric Power Conversion Systems, especially
152+, for induction type (e.g., transformer) phase conversion systems.
