US PATENT SUBCLASS 331 / 86
WITH MAGNETICALLY CONTROLLED SPACE DISCHARGE DEVICE (E.G., MAGNETRON)

Current as of: June, 1999
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331 /   HD   OSCILLATORS

86WITH MAGNETICALLY CONTROLLED SPACE DISCHARGE DEVICE (E.G., MAGNETRON) {5}
87  DF  .~> With particular pulsing means
88  DF  .~> With frequency stabilization
89  DF  .~> With secondary emissive electrode
90  DF  .~> With frequency adjustment
91  DF  .~> With undesired mode suppression or selection means

DEFINITION

Classification: 331/86

(under the class definition) Subject matter wherein the active element of the oscillator consists of a space discharge device having means for producing a space discharge comprising charged particles, such as electrons or ions, and wherein further means are provided for subjecting the space discharge to the direct control of a magnetic field and an electric field.

(1) Note. This subclass includes magnetrons, a specific form of magnetically controlled space discharge device. The magnetron is essentially a diode comprising a linear cathode, an anode, usually cylindrical, coaxial therewith and wherein the magnetic field is parallel to the longitudinal axis of the cathode while the electric field is transverse thereto. In the multicavity magnetron the frequency determining element is structurally a part of the anode.

SEE OR SEARCH THIS CLASS, SUBCLASS:

5, for magnetic field controlled space discharge device oscillators of the automatic frequency stabilized type.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

433, for cathode-ray tube structure provided with electrostatic and electromagnetic, beam deflecting means and subclasses 153+ for space discharge device structure provided with a magnetic device, especially indented subclasses 156+ for space discharge devices where the magnetic field is transverse to the discharge. 315, Electric Lamp and Discharge Devices: Systems,

5.13, for cathode ray device with a hollow resonator combined with a magnetron, subclasses 399+ for cathode-ray tube systems utilizing electromagnetic beam deflection, and subclasses 39.51+ for distributed parameter type resonator magnetron space discharge devices in general wherein the resonator is a structural part of the space discharge device.

329, Demodulators,

322, for a magnetron type frequency demodulator and subclass 354 for a magnetron type amplitude demodulator.

330, Amplifiers,

47+, for linear amplifiers utilizing a magnetic field controlled space discharge tube as the active element

thereof.

332, Modulators, particularly

132, and 166 for modulators utilizing magnetic field type electronic tubes (e.g., magnetron).