US PATENT SUBCLASS 315 / 5.53
.~.~.~.~ 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}
5.53.~.~.~.~ Device tunable {1}
5.54  DF  .~.~.~.~.~> Device has a flexible wall

DEFINITION

Classification: 315/5.53

(under subclass 5) Subject matter wherein the hollow device

is a resonator having an adjustable shape or dimension to permit variation of the resonant frequency, or wherein the device includes or is combined with structure which varies the resonant frequency.

(1) Note. The width of the resonator gap across which the cathode-ray travels may be varied to alter the capacity shunting the resonator, thus changing the resonator frequency.

(2) Note. The structure which varies the resonant frequency may be another resonator. See subclasses 5.39+ for plural resonators where the ray passes through the plurality of resonators.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5.13, for a magnetron having a ray passing through or in the hollow distributed parameter device for tuning purposes.

5.14+, for a hollow distributed parameter device having an additional ray passing through or in for tuning purposes. 5.21+, for a tunable hollow distributed parameter device having a ray passing through or in, the ray returning to the device.

5.46+, for a plurality of hollow distributed parameter devices at least on being tunable and a single ray passing through each.

39, for a discharge device load generally (noncathode-ray tube) with a distributed parameter line, which is tunable.

39.55+, for distributed parameter resonator-type magnetrons with variable tuning.

SEE OR SEARCH CLASS

250, Radiant Energy,

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

330, Amplifiers,

45, for amplifier systems having electron beam tubes coupled to cavity resonators including those having subject matter of the type classified in this subclass.

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 therethrough.

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