US PATENT SUBCLASS 315 / 254
.~.~ Transformer in the supply circuit

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

246  DF  PULSATING OR A.C. SUPPLY {10}
250  DF  .~ Plural load device systems {5}
254.~.~ Transformer in the supply circuit {2}
255  DF  .~.~.~> Plural transformers in the supply circuit {1}
257  DF  .~.~.~> With plural secondary or tapped secondary

DEFINITION

Classification: 315/254

(under subclass 250) Systems provided with a transformer connected between the source of supply and at least one of the load devices for supplying electric current and/or potential to the load device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

144, for this subject matter for polyphase alternating current systems.

177, for this subject matter where one load device is connected in the primary circuit of the transformer and another is connected in the secondary circuit of the transformer.

212, for plural load device systems having a distributor type periodic switch means and a transformer in the supply circuit of the load devices.

276, and indented subclasses and the subclasses specified in the notes to the definition of that subclass, for other systems with a transformer in the supply circuit of a load device.

SEE OR SEARCH CLASS 323, Electricity: Power Supply or Regulation Systems,

355, 363, and the subclasses specified in the Notes to the definitions of those subclasses, for miscellaneous transformer systems and for systems having a transformer for controlling the magnitude of the current and/or voltage in a single circuit.