US PATENT SUBCLASS 315 / 5.47
.~.~.~.~.~.~ Gang tuned hollow devices

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  DF  .~.~.~.~.~ Device tunable {2}
5.47.~.~.~.~.~.~ Gang tuned hollow devices

DEFINITION

Classification: 315/5.47

(under subclass 5.46) Subject matter wherein at least two of the hollow resonant devices include frequency changing structure and wherein the frequency changing structures of the respective devices are linked together; e.g., mechanically or electrically, so that the resonance frequencies of the respective devices are changed simultaneously.

(1) Note. Two such devices whose tuning is independently adjustable but which may each be adjusted together to change the resonant frequencies as by manual manipulation are not classified in this subclass. For classification here, there must be a positive linkage between the devices to produce simultaneous frequencies change, although independent frequency change may also be present in addition.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

1, 10+, and 20 through 110 for mechanical structure for tuning a plurality of distributed parameter devices.