US PATENT SUBCLASS 315 / 100
.~.~.~ Thermostatic switch in the series circuit

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}
98  DF  .~ Plural cathodes or heaters in the load device {1}
99  DF  .~.~ Series connected cathodes or heaters {1}
100.~.~.~ Thermostatic switch in the series circuit

DEFINITION

Classification: 315/100

(under subclass 99) Systems provided with a thermostatic electric switch connected in the electrical series circuit which includes the plurality of cathodes and/or cathode heaters, the thermostatic switch being connected in the circuit to open and close the series circuit.

(1) Note. In most of the systems in this subclass, the cathodes and/or heaters are connected in series relation until they have become heated to the operating temperature, the thermostatic switch then opening the series circuit so that the cathodes and/or heaters and the source of current supply are no longer in series relation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

99, for corresponding systems having other than thermostatic switches.

SEE OR SEARCH CLASS

337, Electricity: Electrothermally or Thermally Actuated Switches,

14, for electrothermally actuated switches.