(under the class definition) Systems having two or more load devices connected in the system, at least one of the load devices being of a different type from another of the load devices.
(1) Note. To be considered diverse type load devices, the load devices must differ in some electrical characteristic. Mere difference in color or shape is not enough to make the load devices of different characteristics within the meaning of the definition of this subclass. Discharge devices containing different gases, or having different starting or operating characteristics, or having a different number or types of electrodes are considered to be of diverse types. Load devices having different impedances are considered to be diverse types.
(2) Note. Where a single lamp or a single discharge device is the ultimate load device, and the system includes an additional lamp and/or discharge device in the circuit which is connected in the circuit so as to control and/or modify the current and/or potential supplied to such single ultimate load device, the patent is classified as a plural load device system if (a) the controlling and/or modifying device is a lamp, or (b) the controlling and/or modifying device is limited in the claims to being a gas or vapor discharge device. Conversely, such a system is not classified as a plural load device system where the controlling and/or modifying device is claimed broadly as a discharge device even though it is disclosed as a gas or vapor discharge device.
The controlling and/or modifying device may be connected in the control circuit of the discharge device where the ultimate load device is a discharge control discharge device, and the same basis of classification is used as is set forth above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
46, for an incandescent lamp filament and a discharge device which are structurally combined in one envelope with the filament connected in shunt relation with the discharge electrodes. 67, for multiple filament lamps having structurally combined therewith an electric circuit element such as a switch, the filaments being of different resistance.
87, and subclass 88 and indented subclasses, for systems provided with two or more load devices, of the same or different types, one of which is maintained in nonoperating condition until the first operated fails to operate properly, the system being provided with means to automatically substitute the nonoperated load device for the load device which fails to operate properly.
162, and indented subclass, where there is a plurality of load devices and a plurality of sources of current supply.
177, where one of the load devices is in the primary circuit of the current supply transformer, and the other is in the secondary circuit.
200, and indented subclasses, for systems provided with a discharge device or rectifier which is not a diverse load device in the supply circuit of the load device.
349, and indented subclasses and the subclasses referred to in the notes to the definition of those subclasses for systems provided with a discharge device which is not a diverse load device in the discharge control circuit of the discharge device load.
SEE OR SEARCH CLASS
314, Electric Lamp and Discharge Devices: Consumable Electrodes,
7, where one of the load devices is a consumable electrode discharge device.
