US PATENT SUBCLASS 313 / 257
.~.~.~.~ With spacer between electrode or electrode supports

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}
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}
257.~.~.~.~ With spacer between electrode or electrode supports {4}
258  DF  .~.~.~.~.~> Spacer between envelope and support or electrode
259  DF  .~.~.~.~.~> Insulating coating forms spacer
260  DF  .~.~.~.~.~> Plate or bar extending across ends of electrodes {1}
262  DF  .~.~.~.~.~> Ceramic bead for joining parts

DEFINITION

Classification: 313/257

(under subclass 252) Discharge devices which have a spacer member interposed between different electrodes or different electrode supports.

(1) Note. For the definition of "spacer" see (2) Note to the definition of subclass 238.

SEE OR SEARCH THIS CLASS, SUBCLASS:

241, where the discharge device has a spacer member and a shielding member extending across the ends of a plurality of electrodes.

250, where the discharge device has an elongated envelope and the electrodes are supported along the longitudinal axis of the envelope, a spacer member being interposed between different electrodes or different electrode supports.

255, where the discharge device is a double ended device, that is it has an electrode supported by support wires, rods or tubes which are supported at both of two opposed or spaced parts of the envelope.

268, for discharge devices which are not enclosed within an envelope which have a spacer member interposed between the electrodes. 285+, for devices under the class definition which have an electrode supported by means of a plurality of support wires, rods or tubes within an envelope, a spacer member being interposed between at least two of the support wires, rods or tubes or between the electrode or the electrode support and the envelope. See subclass 288 where the spacer is between the envelope and the electrode or support.

292, for miscellaneous supporting and spacing elements, per se.