(under the class definition) Devices provided with an envelope which encloses the electrodes of the device.
(1) Note. This subclass provides only for lamps and discharge devices which are provided with an envelope when there is some significance in the use of the envelope in a lamp or discharge device. Also, included are lamps and discharge devices which are provided with a specific envelope where the claims state that the envelope contains one or more electrodes of a discharge device, a lamp filament, or other structure sufficient to exclude the patent from the classes which provide for the envelope and envelopes with bases, per se. Envelopes, per se, for lamps and discharge devices are classified in Class 220, Receptacles, subclasses 2.1+, or Class 174, Electricity: Conductors and Insulators if claimed in combination with the lead-in structure, or in Class 439, Electrical Connectors, if claimed in combination with electrical connector structure as pointed out in the class definition. See the class definition for the line between Class 313 and the other classes with respect to the subject matter provided for in this subclass. Consequently, patents disclosing envelopes for electric lamps and discharge devices are not cross-referenced into this subclass solely for the envelope structure of for the structure of the envelope and its base (electrical connector), but are cross-referenced in one of the classes specified in the class definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
17+, where the envelope of the device is provided with a jacket or casing for modifying the temperature of the envelope (e.g., cooling, heating or insulating the device), see subclasses 25+ where the envelope is provided with spaced double walls and includes means (e.g., vacuum, gas, insulating material) in the space between the envelope walls for modifying the temperature of the lamp or discharge device.
33, where the envelope is provided with an internal temperature modifying baffle.
34, where the envelope is provided with a condensing chamber or surface to cool the gas or vapor within the envelope.
44, where the envelope wall is provided with means to modify the temperature of the device (e.g., heat radiating means, etc..). 109, where the envelope is coated or contains a fluorescent or phosphorescent material.
110+, where the envelope is provided with optical means (e.g., lens, etc..) to modify the ray energy passing through the envelope wall, see subclass 112 where the optical means is a polarizer, or filter, subclass 113 where the optical means is a reflector, subclass 116 where the envelope wall is light diffusing, and subclass 117 where the optical means is a light valve or light obscuring means.
148, where the device has a movable electrode and a portion of the envelope wall is moveable to transmit motion to the movable electrode.
168, for liquid electrode (e.g., mercury) discharge devices having a plurality of anodes, the envelope being provided with separate anode chambers.
237, where the envelope and the parts of the device are made so that the device can be readily disassembled to repair or replace a part of the device.
242, for devices under the class definition which have means for supporting a shield, the shield being supported by or forming part of the stem of the envelope.
246+, and 248, for discharge devices having an envelope and means for supporting and/or spacing a plurality of electrodes therein, the envelope being formed of conductive material. See subclasses 246+ where the conductive envelope portion is an electrode of the device.
266, for discharge devices under the class definition having a plurality of electrode supported by wires, rods, or tubes within an envelope, the structure of the envelope or the envelope stem which supports the electrode supports being modified.
282, for devices which have an envelope with an electrically conductive (e.g., metal) envelope portion which supports an electrode within the envelope.
290, for devices under the class definition having an electrode supported by a wire, rod or tube within an envelope, the structure of the envelope or the envelope stem which supports the electrode support being modified.
312, where the device is provided with an envelope and has a separable casing or jacket which wholly or partially surrounds the envelope. 313, for devices under the class definition provided with means for preventing the accumulating of static charges upon the envelope.
314, for devices under the class definition provided with envelopes which shatter when an attempt is made to open the envelope for the purpose of repairing the electrodes of the
device.
315+, for incandescent lamps provided with an envelope. See (3) Note to the definition of subclass 315 for the incandescent lamps which are classified in this and the indented subclass.
530, where the device is a photo-sensitive discharge device having the cathode on the envelope wall.
547, where the envelope is provided with valve means for introducing a gas or vapor into or withdrawing a gas or vapor from the envelope.
609+, for gas or vapor discharge devices where the envelope is shaped so that a portion of the envelope is interposed in the straight line path between the electrodes (e.g., coiled, U-shaped, etc..) or where the envelope is provided with a restricted cross-sectional portion so as to provide a partition or baffle between the discharge electrodes.
626, where the device includes an envelope containing an atmosphere of a gas or vapor and a lead-in wire, the stem of the envelope being formed so as to shield the lead-in wire from deleterious influences, such as sputtered particles, vaporized metals, etc..
634+, and 636, where the device includes an envelope containing an atmosphere of gas or vapor. See subclasses 634+ where the device is defined by the structure of the envelope and subclass 636 where the device is defined by the composition of the envelope.
SEE OR SEARCH CLASS
174, Electricity: Conductors and Insulators, see (1) Note, above.
220, Receptacles, 2.1+, see (1) Note, above.
439, Electrical Connectors, and see (1) Note, above.
