US PATENT SUBCLASS 219 / 630
.~.~.~.~ Core or coil structure

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

600  DF  INDUCTIVE HEATING {7}
618  DF  .~ With heat exchange {6}
628  DF  .~.~ Fluid or liquid heater {1}
629  DF  .~.~.~ By tube (i.e., pipe) {1}
630.~.~.~.~ Core or coil structure {1}
631  DF  .~.~.~.~.~> Core rotation

DEFINITION

Classification: 219/630

Core or coil structure:

(under subclass 629) Subject matter wherein (a) a magnetic conductor of particular geometric shape links an inductive winding (primary) to the tube (secondary) or (b) a conducting wound wire (primary) induces an alternating current in the tube (secondary).

SEE OR SEARCH THIS CLASS, SUBCLASS:

670, for a power supply system with a specific transformer structure.

677, for specific inductor configuration having a cooling arrangement.

SEE OR SEARCH CLASS

336, Inductor Devices,

221, 234 for coil and core structures.