US PATENT SUBCLASS 219 / 235
.~.~.~.~.~ With transformer secondary


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

200  DF  HEATING DEVICES {14}
221  DF  .~ Tool or instrument {2}
227  DF  .~.~ Hand-manipulative {4}
229  DF  .~.~.~ With heated tip or other heat concentration means (i.e., heat applied to localized area) {5}
233  DF  .~.~.~.~ Tip in electrical circuit {2}
235.~.~.~.~.~ With transformer secondary


DEFINITION

Classification: 219/235

(under subclass 233) Subject matter wherein the electrical circuitry includes a transformer whose secondary usually is in circuit with the tip.

(1) Note. Hand manipulative tools such as soldering brazing, burning, writing and surgical tools or instruments, which utilize inductive electrostatic or electromagnetic means to heat these tools, are excluded from subclasses 6.5+ of Class 219.

SEE OR SEARCH THIS CLASS, SUBCLASS:

234, for the tip and work coupled to a transformer forming part of the power supply.

240, for significant power supplies or voltage or current controls which may include a transformer in its circuitry.

618+, for closed transformer secondaries with or without a high resistive element in the circuit forming a heat exchange arrangement with the material to be heated.

SEE OR SEARCH CLASS 30, Cutlery,

140, for heated cutting blades which could utilize a soldering "gun" type heating means.