(under the class definition) Subject matter wherein (a) two or more consumable electrode discharge devices, or (b) a consumable electrode discharge device and another type, of electric space discharge device or lamp are claimed.
(1) Note. To be classified in this subclass or the indented subclasses as plural consumable electrode-type discharge devices there must be provided a cathode, an anode, and a separate electrode separating and feeding mechanism for each consumable electrode discharge device, although the electrode separating and/or feeding mechanism of one device, may be influenced by the voltage and/or current flow in the other device. The plurality of discharge devices may be mounted in a single frame.
Where there are a plurality of cathodes and/or anodes, and only a single electrode cooperating with the plural cathodes or anodes, the patent is classified as a single device in subclass 36 and indented subclasses of this class, even though there is a plurality of movable electrodes each of which is actuated by a separate electrode feed regulating mechanism.
(2) Note. For electrical systems for supplying electric current to two or more lamps or discharge devices other than consumable electrode devices, search classes in the Search Notes below for Electric Lamp and Discharge Devices and for
Miscellaneous Active Electrical Nonlinear Devices:
SEE OR SEARCH THIS CLASS, SUBCLASS:
1, and indented subclasses, for plural consumable electrode discharge devices, or for a consumable electrode discharge device and another type of discharge device or lamp, provided with means for operating one of the discharge devices or lamps while the other device or lamp is maintained in nonoperative condition until the first operated device or lamp fails and then automatically substituting the second device or lamp for the first operated device or lamp. SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices,
1, for miscellaneous structures which include either a plurality of lamps or a plurality of discharge devices integrally combined in a single unitary structure or which include a discharge device and an electric lamp integrally combined in a single unitary structure.
315, Electric Lamp and Discharge Devices: Systems,
312, and the subclasses specified in the notes to the definition of those subclasses, for all such supply systems for a plurality of electric lamps and for such supply systems for a plurality of electric space discharge devices of the gas or vapor ionization type, note especially indented subclass 324, where there are a plurality of discharge devices.
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,
530+, for miscellaneous circuits with specific source of supply or bias voltage.
362, Illumination, appropriate subclasses, especially
210, for plural carbon arc-type light sources, and subclasses 228+ for plural light sources, one of which may be of the carbon arc type.
