US PATENT SUBCLASS 336 / 221
COIL AND CORE
Current as of: June, 1999
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DEFINITION
Classification: 336/221
(under the class definition) Inductor devices comprising the combination of coil and core in general and which is not provided for in any of the preceding subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20, for the combination of coil and core where the coil and/or core are distortable to effect an inductance change.
30+, for an inductor comprising coil and core means wherein the inductance thereof is changed by physically displacing parts of the inductor relative to each other in response to some condi
60, for inductor structure with ventilating passages therethrough (e.g., by coil section or core part spacers).
61, for inductor structure with heat exchanging surfaces associated with the coil and/or core thereof.
77, for relatively movable coil and closed coil or conductor member wherein a portion of the closed coil or conductor member is formed of magnetic material. 83, for inductor structure wherein the core forms a casing for the coil (e.g., iron clad coil).
98, for incased inductor structure with exposed core portions.
100, for inductor structures with means to prevent vibration or shattering of core parts caused by varying currents in the coil conductor.
110, for inductor structure including a permanent magnet.
117+, for inductor structure involving relatively movable coils and associated core.
130+, for inductor structures comprising relatively movable coil and core.
155+, for inductive regulator structure of the saturable core or high leakage reactance type.
172, for coil and core wherein at least one coil turn is shorter than the other turns and links only part of the core cross section.
175+, for inductor structure comprising a linear conductor surrounded by a core.
177, for inductor structure having a coil conductor of magnetic material.
178, for coil with a substantially closed core having an air gap. 184, for winding formed of plural coils disposed on different core legs.
196+, for inductor structure with supporting and spacing means between coil and core.
210, for coil with core having core clamps, wedges of fasteners.
211, for coil with concentric core elements.
212, for coil with plural part core.
213, for coil with wound core.
214+, for coil with core having multiple magnetic paths.
216+, for coil with core having novel joint structure.
218, for coil with core of directionally prestressed material (i.e., grain oriented).
219, for coil with core having insulation between core parts.
SEE OR SEARCH CLASS
29, Metal Working, 602.1+, for the process of manufacture, assembly and disassembly of electromagnets and inductors in general particularly subclass 606 for assembling coil and core. See, also, the comprehensive search notes appended to subclasses 602.1+ of Class 29 as to other classes providing for inductors and inductor manufacture.
178, Telegraphy,
46, for the coil and core combinations designed to electrically load electrically long telegraph lines and subclass 64 for telegraph systems utilizing coil transformers.
219, Electric Heating,
50+, especially indented subclass 116, for metal heating systems utilizing transformers; subclasses 600+ for inductive
heating, note subclasses 672+ for a specific heating inductor configuration; subclasses 678+ for microwave heating; and subclasses 764+ for capacitive dielectric heating, note subclass 780 for a specific heating electrode configuration.
307, Electrical Transmission or Interconnection Systems, appropriate subclasses, for miscellaneous electrical systems utilizing transformers or other inductor devices.
310, Electrical Generator or Motor Structure,
10+, for dynamoelectric machine structure, especially subclasses 179+ for windings and core structure.
313, Electric Lamp and Discharge Devices, particularly
62, and 153+, 413, 421+, 442 for coil and core structures combined with electric lamps or space discharge devices.
314, Electric Lamp and Discharge Devices: Consumable Electrodes, particularly 20, for consumable electrode devices with electromagnetic discharge influencing means.
315, Electric Lamp and Discharge Devices: Systems, particularly
4+, 27, 39, 40, 41, and 382 for inductor means associated with lamps and space discharge device in structural and system relationship.
318, Electricity: Motive Power Systems, appropriate subclasses for inductor structure utilized in controlling electric motors.
322, Electricity: Single Generator Systems, particularly
75+, and 95+ for impedance systems including inductors, for controlling single electrical generators.
323, Electricity: Power Supply or Regulation Systems
206, 214, 215, 247+, 301, 305+, and 328+ for power supply or regulation systems utilizing inductors classifiable in class 336.
324, Electricity: Measuring and Testing, particularly 200+, 253+ subclasses for electromagnetic and magnetic testing systems,
55, for transformer testing, subclasses 57+ (especially indented subclass 59) for measuring inductive reactance, and subclasses 76.51, 87, 117, 126+, and 144+ for electrical measuring or testing systems or devices utilizing inductor means.
332, Modulators, particularly 132, 133, 141+, 172, 173, and 175 for modulators employing inductor means.
333, Wave Transmission Lines and Networks, particularly
24+, for coupling networks for transmitting electric wave energy, especially indented subclasses 148 and 186+ for coupling systems utilizing electro-mechanical transducers, and indented subclasses 177+ for transformer coupled filters (indented subclasses 177+ providing for such transformers with magnetic core).
334, Tuners, appropriate subclasses for coil and core structure used in tuner circuits.
335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,
1+, for combined diverse switches, and subclasses 291+ for structure of lifting, holding or tractive magnets.
340, Communications: Electrical,
870.31+, for inductor type telemetering transmitters, and subclasses 384.1+ for electromagnetically operated audible signal generators.
343, Communications: Radio Wave Antennas, particularly
431, and 441 for the structure of goniometers used in direction finding receivers, subclass 748 for loop type antennas with variable reactance for tuning; and subclass 788 for loop type antennas including magnetic material.
360, Dynamic Magnetic Information Storage or Retrieval,
110+, for inductive heads used in magnetic recording or reproducing. 361, Electricity: Electrical Systems and Devices,
1+, for electromagnetic devices with protective means, especially indented subclasses 38+ for structurally combined transformers and protective devices; subclasses 117+ for high voltage dissipators, especially indented subclass 118 for surge preventing choke coils and indented subclasses 133+ for such dissipators with magnetic means (e.g., electromagnet); subclasses 139+ for electric circuits for relays and electromagnets; subclasses 268+ for subject matter of Class 336 combined with integral switch, capacitor or lock means; and subclasses 331+ for plural different components such as inductors and capacitors, or inductors and resistors structurally related with each other and not classified elsewhere.
363, Electric Power Conversion Systems, particularly
5, 26, 75, 82, 90, 140, 152+, and 170+ for inductors employed in current, phase, or frequency conversion systems.
365, Static Information Storage and Retrieval, appropriate subclass for electromagnetic storage systems,
185.01+, for floating gate memory storage (e.g., flash memory).
367, Communications, Electrical: Acoustic Wave Systems and Devices,
168, for magnetostrictive acoustic wave transducers.
373, Industrial Electric Heating Furnaces,
138+, for induction furnaces wherein the furnace charge may be of magnetic material.
379, Telephonic Communications, 414+, for loaded telephone lines, subclass 443 for telephones combined with induction coils, and appropriate subclasses for induction coils adapted for use in telephone systems.
381, Electric Audio Signal Processing Systems and Devices,
150+, for audio transducers.
