US PATENT SUBCLASS 313 / 286
.~.~.~.~ At spaced or opposed portions of envelope

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

238  DF  WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD {9}
283  DF  .~ Electrode supported by envelope {2}
284  DF  .~.~ Electrode supporting member supported by envelope {1}
285  DF  .~.~.~ Supporting wire, rod, or tube supported by envelope {5}
286.~.~.~.~ At spaced or opposed portions of envelope

DEFINITION

Classification: 313/286

(under subclass 285) Devices which have (1) the electrode supported by a plurality of support wires, rods or tubes at least one of the support wires, rods, or tubes being supported by a part of the envelope wall which is opposite to or spaced at a distance from the part of the envelope wall which supports another of the supporting wires, rods or tubes, or (2) which have at least one of the supporting wires, rods or tubes for the electrode supported by a part of the envelope wall which is opposite to or spaced at a distance from the part of the envelope wall which supports a different portion of the support wire, rod or tube.

(1) Note. This subclass does not include devices where all the support rods, wires or tubes are sealed into a common stem or press of the envelope even though the support wires, rods or tubes are widely spaced from each other.

(2) Note. One of the common types of structures found in this and the indented subclasses is the so-called "multiple ended" devices, that is devices having a stem or press at each end of a substantially tubular envelope, an electrode support wire, rod, or tube being supported by each of the stems or presses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

255, where the device is a discharge device having a plurality of electrodes, at least one of the electrodes being supported by support wires, rods or tubes which are supported by spaced or opposed parts of the envelope wall.

274, where the electrode supported by the support wires, rods or tubes is a filament.

318.01+, for a device within the class definition which is provided with an envelope, the device having at least a base and an electrical connector attached to spaced or opposed parts of the envelope.

318.12, for a device within the class definition having an envelope and an electrical connector attached to spaced or opposed parts of the envelope