US PATENT SUBCLASS 338 / 215
WITH SWITCH


Current as of: June, 1999
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338 /   HD   ELECTRICAL RESISTORS

215WITH SWITCH


DEFINITION

Classification: 338/215

(under the class definition) Subject matter wherein a switch is connected in series or parallel with the resistor for effectively connecting or disconnecting the resistor from the circuit; and not otherwise classifiable.

(1) Note. As between this class and Class 200, Electricity: Circuit Makers and Breakers, the combination of a switch and a resistor which does not perfect the switching is classified here. The combination of a switch and a plurality of resistance elements or portions of an element, the switch alternately connecting and disconnecting the respective source or electrical energy, or connecting the elements or portions in different combinations of series and parallel arrangements to a source as to produce a high or low heating effect or different heat distribution patterns, is classified in Class 219, Electric Heating, especially subclasses 482+. This subclass (215) is usually limited to the structural combination of a single resistor and switch, the switch effectively connecting and disconnecting the resistor and source of electrical energy. The general combination of a plurality of resistance elements and one or more switches to produce a variable resistance value is classified in subclasses 172, 179, 185+, and 200+ above. See (1) Note under subclass 200.

SEE OR SEARCH THIS CLASS, SUBCLASS:

172+, for mechanically variable resistors whose contact slides angularly along the element together with switching; and subclass 179 for such resistors with a rectilinearly slidable contact and a series switch. See also (1) Note above.

185+, for mechanically variable resistors of the tap type involving a switch. See also (1) Note above.

200+, for mechanically variable resistors generally with a switch. See also (1) Note above. 334, for resistors connected electrically to other electrical devices, and not otherwise classifiable.

SEE OR SEARCH CLASS

123, Internal-Combustion Engines,

148, for high tension ignition systems, including a combined distributor and resistor.

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

1+, for switches with shunt resistors for contact arc preventing or extinguishing.

219, Electric Heating, especially

482, for heating systems involving the combination of a switch and resistors. See also (1) Note above.

307, Electrical Transmission or Interconnection Systems,

112+, for miscellaneous switching systems which may include a resistor and a switch.

361, Electricity: Electrical Systems and Devices,

58, for safety and protection systems which may include a resistor and a switch.