(under subclass 544) Subject matter which is regularly curled, twisted, or flat-wound, or which contains a twisted or flat-wound component, inside or outside another component.
(1) Note. A mere statement that the entire stock-material* is a "coil" is not sufficient for placement in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37, 222, 371, and 377, for nonmetallic* sheet, web, rod, strand, filament or fiber that is of spiral form or includes a spirally coiled component.
906, for a collection of patents which concern coiled stock-material*.
SEE OR SEARCH CLASS
5, Beds, 239+, 246+ and 254+ for springs of that class.
29, Metal Working,
20.1, for spiral cutting of flat stock, and subclass 173 for manufacture of springs.
52, Static Structures (e.g., Buildings),
740.8, for an elongated rigid structure of the sinuous curve type, and subclasses 740.6+ for an axially twisted-type elongated rigid structure.
57, Textiles: Spinning, Twisting, and Twining,
200+, for twisted stock-materials* of indefinite length, made from filamentary or fibrous material, e.g., metal fibers, filaments or wires, or stock-materials* made by helically wrapping a cover about a filamentary or fibrous core.
72, Metal Deforming,
135+, for processes of that class directed to forming a helical coil or tube, and subclasses 146+ for forming a spiral coil.
87, Textiles: Braiding, Netting, and Lace Making, appropriate subclasses, for stock-material* made by a process of that class, even when the braided material is only a
component of a composite; it should be noted, however, that stock-material* which is made by a process which goes significantly beyond Class 87, e.g., which includes steps for bonding the braided fibers to each other or to another component, are generally classified in this class (428).
138, Pipes and Tubular Conduits, 154, for spirally seamed tubing.
174, Electricity: Conductors and Insulators,
29, for conduits, cables and conductors of the coaxial or concentric type with spiral spacers, subclass 108 for such materials having spirally applied conductive armor or sheathing, and subclass 128.1 for a plural-strand conductor.
178, Telegraphy,
45+, for wave-transmission systems having conductors or lines loaded with inductance coils.
245, Wire Fabrics and Structure,
6, for fabrics comprising a plurality of connected helical coils.
267, Spring Devices,
166+, for coil springs.
313, Electric Lamp and Discharge Devices,
344, for coiled filament or resistance-heated electrodes.
336, Inductor Devices, appropriate subclasses, especially 255+, for helical components of that class.
338, Electrical Resistors,
296+, for a helical or wound-resistance element.
374, Thermal Measuring and Testing,
207, for a bimetallic thermometer having a helical member.
492, Roll or Roller,
43, for a roll having a spiral member, and subclass 44 for a roll having a helical member.
