(under the class definition) Inductor devices comprising three or more windings, not elsewhere provided for.
(1) Note. Inductors with polyphase windings which may have three or more windings are not classified in this subclass but such subject matter is classified above in subclasses 5+ of this class.
(2) Note. Inductors which may have two or more windings and in addition a closed or short circuited coil or winding are not classified in this subclass but such subject matter is classified above in subclasses 73+ of this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5+, and see (1) Note above.
73, and see (2) Note above. 115+, for inductive devices with relatively movable coils which may have three or more windings.
130+, for inductive devices having relatively movable core and coil, which may have three or more windings. See particularly indented subclass 131 for inductors including plural cores and plural coils or windings.
137+, for inductive devices with means to change coil lengths or connections which may have three or more windings. See particularly indented subclasses 145+ for transformers with plural windings or coils.
155+, for inductive regulators which have plural windings.
182+, for inductor devices with two windings at least one of which is a plural coil winding.
188, for inductor devices having two windings with mutually crossed turns.
214+, for inductive devices having multiple magnetic paths which includes subject matter where such multiple magnetic paths have or are adapted to have three or more windings distributed thereon.
220, for inductive devices having two windings, not elsewhere provided for.
SEE OR SEARCH CLASS
310, Electrical Generator or Motor Structure,
184+, and 198+ for plural field windings and plural armature or primary windings, respectively, for rotary dynamoelectric machines. 323, Electricity: Power Supply Regulation Systems, particularly
48+, for transformer systems with plural primary and/or secondary windings, and subclasses 83+ for inductor systems in general having plural windings.
330, Amplifiers,
165+, 188+, and 195+ for amplifier systems having transformer coupling, particularly subclasses 171, 190, and 197 where transformer structure is involved.
335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,
291, for electromagnets of the lifting, traction and related types.
