US PATENT SUBCLASS 315 / 219
.~ Periodic switch in the primary circuit of the supply transformer

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

209 R  DF  PERIODIC SWITCH IN THE SUPPLY CIRCUIT {11}
219.~ Periodic switch in the primary circuit of the supply transformer {4}
220  DF  .~.~> Plural transformers in the supply circuit
221  DF  .~.~> Secondary conductively connected to the primary
222  DF  .~.~> Plural interrupted transformer coil circuits
223  DF  .~.~> Condenser or inductance in the primary circuit

DEFINITION

Classification: 315/219

(under subclass 209) Systems provided with a transformer connected between the source of supply and the load device for supplying electric current or potential to the load device and having the periodic switch connected in the primary circuit of the transformer so as to periodically interrupt the primary circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

212, and indented subclasses, for periodic switch controlled systems having plural loads and a transformer in the supply circuit.

276, and indented subclasses and the subclasses specified in the notes to the definition of those subclasses for other systems under the class definition which have a transformer connected in the supply circuit of the load device.