US PATENT SUBCLASS 334 / 65
INDUCTOR AND CAPACITOR BOTH VARIABLE


Current as of: June, 1999
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334 /   HD   TUNERS

65INDUCTOR AND CAPACITOR BOTH VARIABLE {2}
66  DF  .~> With variable inductor and capacitor structure in common {2}
69  DF  .~> Inductor and capacitor simultaneously varied {1}


DEFINITION

Classification: 334/65

(under the class definition) Subject matter in which at least an inductor and capacitor are electrically connected together to form a parallel tuned circuit, both the inductor and capacitor being of the continuously variable type.

(1) Note. A variable capacitor connected to an inductor which is varied by switching the inductor or a portion thereof, into or out of a circuit is not classified in this subclass but is found in subclasses 47+ above. Also, a variable inductor connected to fixed capacitors which are switched into or out of a circuit is found in subclasses 47+ above. Note particularly subclasses 55 and 56+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64, for series tuned circuits which may have both a variable inductor and capacitor.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

10+, for drive means for a tuner which may be operating a variable inductor and/or capacitor. 336, Inductor Devices, appropriate subclasses for inductor structure, per se.

361, Electricity: Electrical Systems and Devices,

271+, for capacitor structure, per se. See also the Search Notes to this subclass for a complete field of search as to capacitors.