US PATENT SUBCLASS 219 / 63
.~.~ Rotary transformer part

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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
59.1  DF  .~ Of cylinders (e.g., pipes and tubes) {14}
63.~.~ Rotary transformer part

DEFINITION

Classification: 219/63

(under subclass 59.1) Subject matter having a transformer of which at least a portion rotates in relation with the feed of the workpiece.

(1) Note. The entire transformer, including its secondary terminals and their electrodes may rotate in unison as the electrodes ride along the work, or only a portion of the transformer, such as the secondary and electrodes, may rotate.

SEE OR SEARCH CLASS

336, Inductor Devices, appropriate subclasses for the structure of rotary transformers, per se.