US PATENT SUBCLASS 219 / 240
.~.~.~ With power supply, voltage or current control, or connection and/or disconnection means

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}
240.~.~.~ With power supply, voltage or current control, or connection and/or disconnection means {1}
241  DF  .~.~.~.~> With thermal control means

DEFINITION

Classification: 219/240

(under subclass 227) Subject matter wherein the structure includes details of means to supply current to the electrical heating means of the tool or instrument, or voltage or current control means responsive to the condition within or externally of the tool or instrument, or connection and/or disconnection means in the electrical circuit of the heating means of the tool or instruments.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108+, for systems of current supply for resistance welding apparatus.

130.1+, for systems of current supply for arc welding apparatus.

222+, for systems utilizing hair treating, heating and/or curling which include power supplies, current or voltage control and connection and/or disconnection means.

250+, for significant power supplies and voltage or current control means used with hand held sole plate type pressure application means. 482+, for power supplies, voltage or current regulation or control means not associated with any particular type of electrically heated tool, instrument or device.

507+, for significant current connection and/or disconnection means not associated with any particular type of electrically heated tool or instrument or device set forth in this class.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

51+, for the combination of a Class 439 quick make and break connector with or acting as a Class 200 circuit maker and breaker in an integral unit, subclasses 332.1+ for mechanical quick make and break switches including those mounted on handles.

218, High-Voltage Switches With Arc Preventing or Extinguishing Devices,

1+, for arc preventing and extinguishing combined with switches.

307, Electrical Transmission or Interconnection Systems, appropriate subclasses for plural supply and/or plural load circuits for controlling the current or load circuits.

323, Electricity: Power Supply or Regulation Systems, appropriate subclasses for current or load regulation, transformer, impedance and phase control systems involving a single source of power and a solitary load device where no particular art devices are involved.

361, Electricity: Electrical Systems and Devices,

139+, for electromagnetic device control circuit.