US PATENT SUBCLASS 315 / 39.51
.~ Distributed parameter resonator-type magnetron

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

32  DF  COMBINED LOAD DEVICE OR LOAD DEVICE TEMPERATURE MODIFYING MEANS AND ELECTRICAL CIRCUIT DEVICE STRUCTURE {19}
39.51.~ Distributed parameter resonator-type magnetron {10}
39.53  DF  .~.~> With output-coupling means
39.55  DF  .~.~> Variable tuning {3}
39.63  DF  .~.~> With control electrode, secondary emitter, or auxiliary anode or cathode
39.65  DF  .~.~> Having diverse size resonators
39.67  DF  .~.~> Tubular anode with eccentric or axially displaced cathode
39.69  DF  .~.~> With strapping for resonant structure
39.71  DF  .~.~> Magnetic field generating and pole structure
39.73  DF  .~.~> Interdigital electrode
39.75  DF  .~.~> Anode with plural cavities
39.77  DF  .~.~> With resonant cavity coupled to anode

DEFINITION

Classification: 315/39.51

(under subclass 32) Subject matter wherein the device is a discharge device having an electrode or a portion thereof formed so as to provide structure having distributed impedance parameters and having or acting as if it had inductance and capacitance, and which are provided with means for subjecting the discharge space to an electromagnetic field, the device being designed to operate so that there is interaction between the space discharge and the distributed impedance structure.

(1) Note. Included in this and the indented subclasses are discharge devices which are known as magnetrons and which have an electrode formed so as to have distributed inductance and capacitance, or having an electrode formed with a resonant cavity, or having an electrode with interleaved fingers arranged to form a resonant structure (e.g., interdigital anode), or having an electrode formed as a flat strip, or spiral, or perforated so as to form a structure having distributed inductance and capacitance (e.g., a resonator). Note that subclasses 40 and 42 also contain certain types of "magnetrons".

(2) Note. The devices in this subclass are designed for use with a magnetic field. For similar devices where the electrodes are formed so as to provide a structure having distributed inductance and capacitance or where an electrode is formed as an inductor and which do not have electromagnetic means for influencing the space discharge, see this class, subclass 40. Also see subclass 40 for devices where an electrode is formed as an inductor and a separate capacitor is used to form a resonant or tuned circuit, with or without a magnetic field means. See (1) Note, above.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3.5+, for traveling wave cathode-ray circuits with delay type transmission lines.

5.13, for a cathode-ray tube circuit with a distributed parameter resonator type magnetron, the cathode-ray passing through or in the resonator of the magnetron. 35+, for devices under subclass 32 wherein there are two separate magnetron devices within the envelope.

39+, for discharge devices of this type wherein the device includes a transmission line having distributed parameters (e.g., a waveguide, a coaxial cable or a parallel wire transmission line). See (1) Note, above. Note especially that subclass 39.3 provides for devices very similar to the devices in this and the indented subclasses where the structure having the distributed parameters is formed as a transmission line arranged to propagate a traveling wave.

40, see (2) Note, above.

42, for discharge devices under subclass 32 having an inductor connected to an electrode of the discharge device. The device may also include a capacitance so as to form a tuned or resonant circuit. The devices in subclass 42 may include a magnetic means for influencing the space discharge (e.g., one type of magnetron). See (1) Note, above.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

153+, for miscellaneous discharge devices which are provided with an electromagnet for subjecting the discharge space to a magnetic field. These subclasses in Class 313 provide for so-called magnetrons when the structure of the electrode or other portion which is formed to have the distributed impedance structure is not claimed.

330, Amplifiers,

47+, for amplifier systems using magnetrons including those of the type classified in this and indented subclasses.

331, Oscillators,

5, and 86+ for oscillator systems of the magnetron type. 332, Modulators, especially

132, 147+ and 166 for modulating systems using magnetrons of the type classified in this subclass.

333, Wave Transmission Lines and Networks,

219+, for resonators of the distributor parameter type. See subclasses 227+ for the cavity or waveguide type.