(under subclass 74) Subject matter wherein the inductor is formed and/or wound in an irregular or varying configuration as, for example, a tapered winding.
(1) Note. Inductors formed by coating a strip of conductive material upon a coil form in an irregular or varying configuration are properly classified in this subclass.
SEE OR SEARCH CLASS
29, Metal Working,
602.1, for methods of making helical or wound inductance devices involving metal working and assembly.
174, Electricity: Conductors and Insulators,
138, for insulators, per se, upon which an inductor may be wound. 242, Winding, Tensioning, or Guiding,
430+, for a process or apparatus for forming an article (e.g., an inductor, capacitor, or resistor) by winding material onto a core and subclasses 118+, 159+, and 600+ for a spool for receiving wound material.
336, Inductor Devices,
200, for printed circuit type coils and subclasses 225+ for the structure of inductor coils of special configuration.
338, Electrical Resistors,
283+, for zigzag or sinuous resistance elements and subclasses 296+ for helical or wound resistance elements.