US PATENT SUBCLASS 315 / 102
.~ Delayed application of the discharge potential

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

94  DF  WITH CATHODE OR CATHODE HEATER SUPPLY CIRCUIT {6}
102.~ Delayed application of the discharge potential {2}
103  DF  .~.~> With surge generator in the discharge circuit
104  DF  .~.~> Thermostatic controlled delaying means

DEFINITION

Classification: 315/102

(under subclass 94) Systems provided with means in the system to delay the application of the discharge maintaining potential to the discharge electrodes until the cathode has

reached its operating temperature.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

33+, for retarded (time delay) electric switches, per se.

323, Electricity: Power Supply or Regulation Systems,

227, and 291 for electronic tube regulators. 335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

59+, for electromagnetically operated switches, per se.

363, Electric Power Conversion Systems,

115, for current conversion systems having an electronic tube convertor including means to delay the application of discharge potential to the electronic tube until the cathode has reached its operating temperature. The systems in Class 363, subclass 115, are closely analogous to the systems in this and indented subclasses. See section VI, 7 of the class definition of Class 363 for the line between this class (315) and Class 363.