US PATENT SUBCLASS 313 / 253
.~.~.~.~ At spaced or opposed portions of envelope

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

238  DF  WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD {9}
243  DF  .~ For plural electrodes of discharge device {3}
244  DF  .~.~ Envelope supports or forms electrode {5}
252  DF  .~.~.~ Support structure supported by the envelope {7}
253.~.~.~.~ At spaced or opposed portions of envelope {2}
254  DF  .~.~.~.~.~> At three or more portions of envelope
255  DF  .~.~.~.~.~> Same electrode supported by spaced or opposed portions

DEFINITION

Classification: 313/253

(under subclass 252) Discharge devices which have at least one of the supporting wires, rods, or tubes 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 either a different portion of the same support wire, rod or tube or another supporting wire, rod or tube.

(1) Note. This and the indented subclasses do not include discharge devices where all the supporting 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 type structures found in this and the indented subclasses is the so-called "multiple ended" discharge devices, that is discharge devices having a stem or press at each end of a substantially tubular envelope, a support wire, rod, or tube being supported by each of the stems or presses.

(3) Note. The support wires, rods or tubes which are supported by the opposed parts of the envelope may support the same electrode or different electrodes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

247, where the envelope wall includes a hollow conductive part which is designed for use as an electrode, other electrodes being supported within the envelope by means of one or more support wires, rods or tubes which are supported by the opposed end closures of the hollow electrode.

274, for devices under the class definition having a filament enclosed within an envelope, the filament being supported by supporting means which are supported by opposed or spaced parts of the envelope. 286, for devices under the class definition having an electrode enclosed within an envelope, the electrode being supported by one or more support rods, wires or tubes which are supported by opposed parts of the envelope wall.