US PATENT SUBCLASS 363 / 111
.~ Using electronic tube converter

Current as of: June, 1999
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363 /   HD   ELECTRIC POWER CONVERSION SYSTEMS

13  DF  CURRENT CONVERSION {25}
111.~ Using electronic tube converter {4}
112  DF  .~.~> With gap in open atmosphere
113  DF  .~.~> With cathode element control
114  DF  .~.~> In rectifier systems {2}
120  DF  .~.~> In inverter systems {1}

DEFINITION

Classification: 363/111

Using electronic tube converter:

(under subclass 13) Subject matter wherein the converter includes an electronic tube.

(1) Note. See the class definition, under Glossary, for the definition of an electronic tube.

(2) Note. See Lines With Other Classes, Conversion Systems Not Included in This Class, in the class definition of this class for other conversion systems using electronic tubes which are not included in this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

94, for current conversion systems wherein an electronic tube is used for line circuit control.

151, for phase conversion systems including an electronic tube converter.

166+, for frequency conversion systems including an electronic tube converter.

SEE OR SEARCH CLASS 315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses for miscellaneous systems for supplying current to electronic tubes of the gas or vapor tube type. In these systems, the output circuit may be claimed if it is claimed so broadly as to be in effect the

mere completion of the circuit so that a discharge may take place. In many of the systems in Class 315, the electronic tube is an asymmetrical discharge device and operates to pass electric current in one direction only between the discharge electrodes. Merely naming the device as a rectifier will not exclude the patent from Class 315, unless some subject matter is claimed which limits the system to the conversion art. The subject matter of Class 315 is closely analogous to the subject matter of this and the indented subclasses. See the class definition, Lines With Other Classes, for a statement of the line between Classes 315 and 363.

323, Electricity: Power Supply or Regulation Systems,

227, and 291 for control systems involving an electronic tube.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, appropriate subclasses for miscellaneous electron tube systems not otherwise classified.