US PATENT SUBCLASS 313 / 11
WITH TEMPERATURE MODIFIER

Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

11WITH TEMPERATURE MODIFIER {19}
11.5  DF  .~> Spark plug type
12  DF  .~> Recirculating systems
13  DF  .~> Having control means for the temperature modifier
14  DF  .~> Pyroelectric type device
15  DF  .~> Electric heater {1}
17  DF  .~> Double wall, jacket or casing for envelope {5}
29  DF  .~> For liquid electrode
30  DF  .~> Hollow electrode or lead {2}
33  DF  .~> Envelope with internal temperature modifying baffle
34  DF  .~> Envelope with condensing chamber or surface
35  DF  .~> Using liquids or fluid flow directing means {1}
37  DF  .~> For filament or heated cathode {1}
39  DF  .~> For electrode within an envelope {1}
42  DF  .~> Mounted on lead-in or electrode support
43  DF  .~> For lead-in-seal or stem protection
44  DF  .~> For envelope wall
45  DF  .~> Radiating type surface
46  DF  .~> Having heat conducting path
47  DF  .~> Heat conserving or insulating type

DEFINITION

Classification: 313/11

(under the class definition) Subject matter where a lamp, discharge device or an electrode therefor is provided with means or is combined with means for modifying the temperature of the device, the electrode, or some other part thereof.

(1) Note. Neither this nor any of the indented subclasses provide for electric lamps including those of the discharge device type, photosensitive discharge devices nor generators of invisible radiation such as X-ray tubes, ultraviolet ray generators in combination with a separable casing for the lamp or device which is provided with means for modifying the temperature of the lamp or device. See the class definition for the classes which provide for the excluded subject matter.

(2) Note. Indented subclass 26 provides for discharge devices and lamps which are provided with an envelope formed of two spaced apart integral walls, the space between the walls being evacuated, gas filled, or otherwise containing means to modify the temperature of the lamp or discharge device. See the class definition for the classification of double wall envelopes, per se.

(3) Note. Discharge devices and lamps provided only with directly heated filaments, indirectly heated cathodes or other types of thermionic cathodes, are not included in this or the indented subclasses. This and the indented subclasses provide only for lamps and discharge devices which have means in addition to the filament or cathode for modifying the temperature of the lamp or discharge device. Note that discharge devices having liquid electrodes (e.g., mercury vapor device) and electric heaters therefor are in subclass 16 and discharge devices having liquid electrodes and other types of temperature modifiers for the liquid electrode are in subclass 29.

(4) Note. See the class definition for other classes which provide for the miscellaneous heat transfer apparatus such as envelopes and casings for lamps or discharge devices with temperature modifying means.

(5) Note. Discharge devices and lamps having a movable electrode actuated by a thermally responsive means such as a thermostat, with or without a heating means for the thermally actuated moving means, are not classified in this and indented subclasses, but are found in subclass 151. SEE OR SEARCH THIS CLASS, SUBCLASS:

151, see (5) Note above.

SEE OR SEARCH CLASS

314, Electric Lamp and Discharge Devices: Consumable Electrodes,

26+, for consumable electrode discharge devices provided with temperature modifying means and the electrical systems therefor.

315, Electric Lamp and Discharge Devices: Systems,

50, for electric lamps and discharge devices which are provided with means for modifying the temperature of at least part of the lamp or discharge device, the temperature modifying means being either combined with or forming an electrical impedance element. In subclass 50, of Class 315 will be found, for example, discharge devices which are provided with means to conduct a cooling fluid to the discharge device where the conduits for conducting the cooling fluid are arranged to form a high resistance path between a discharge device and the source of cooling fluid. See subclasses 112+ and the subclasses specified in the notes to those subclasses for electric lamp and discharge device systems wherein the lamp or discharge device is provided with means for modifying its temperature and the system includes means to supply current to the lamp or discharge device or to control the temperature modifying means.