US PATENT SUBCLASS 315 / 5.46
.~.~.~.~.~ Device tunable

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

1  DF  CATHODE RAY TUBE CIRCUITS {11}
3  DF  .~ Combined cathode ray tube and circuit element structure {2}
4  DF  .~.~ Inductor or distributed parameter-type inductive structure {2}
5  DF  .~.~.~ Ray passes in or through a hollow distributed parameter device {15}
5.39  DF  .~.~.~.~ Plural hollow devices {6}
5.46.~.~.~.~.~ Device tunable {2}
5.47  DF  .~.~.~.~.~.~> Gang tuned hollow devices
5.48  DF  .~.~.~.~.~.~> Device has a flexible wall

DEFINITION

Classification: 315/5.46

(under subclass 5.39) Subject matter, wherein at least one of the hollow devices is resonant at a particular frequency together with structure for changing or permitting change in the resonant frequency.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5.13, for a magnetron having a ray passing in or through its resonator for tuning purposes.

5.21+, for a tunable hollow distributed parameter device wherein the ray returns to the device after passing through or in it.

5.53+, for a single hollow distributed parameter device having a ray passing through or in, and which is tunable.

SEE OR SEARCH CLASS

250, Radiant Energy, 250, for wave meters utilizing tunable coupling networks or adjustable long line sections as resonators.

333, Wave Transmission Lines and Networks,

219+, for resonators of the distributed parameter type whose resonant frequency may be adjusted, and which are adpated for passage of a cathode-ray through or in.

334, Tuners, appropriate subclasses for tuned networks for use in wave energy apparatus and comprising inductance and capacitance elements in circuit arrangement and in which structure is provided for adjusting one or both of these elements for changing the mean resonant frequency of the circuit.