US PATENT SUBCLASS 313 / 318.01
.~ Having base and connector

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

317  DF  WITH ENVELOPE {2}
318.01.~ Having base and connector {8}
318.02  DF  .~.~> Secure to each end of a double-ended or tubular envelope
318.03  DF  .~.~> Having an annular contact disposed concentrically about the longitudinal axis of the envelope {1}
318.05  DF  .~.~> Having spaced, longitudinally engaging, pronglike contacts
318.06  DF  .~.~> Having three or more electrical contacts
318.07  DF  .~.~> Associated with pinch (or press) seal of envelope
318.08  DF  .~.~> Base attached to the envelope with cement or adhesive
318.09  DF  .~.~> Base attached to the envelope with friction or other mechanical means {1}
318.11  DF  .~.~> Having a reflector in combination with base

DEFINITION

Classification: 313/318.01

Having base and connector:

(under subclass 317) Devices wherein the envelope is provided with a base attached to the envelope, the base being provided with contact means for making electrical connection to the electrodes of the device.

(1) Note. This subclass provides only for lamps and discharge devices which have an envelope and the base

therefor when there is some significance in the fact that the device within the envelope is a lamp or discharge device. This subclass, therefore, is subject to all the limitations set forth in the notes to the definition of subclass 317. As pointed out in the class definition, lamps and discharge devices having an envelope with a base therefor where the base includes electrical connector means (e.g., contact prongs) are classified in Class 439, Electrical Connectors, where no significant structure of the lamp or discharge device is claimed. Likewise, lamps and discharge devices having an envelope with an attached base where the structure claimed relates solely to the joint between the base and the envelope are classified in Class 403, Joints and Connections, as pointed out in the class definition. Envelopes having a base thereon are classified in Class 220, Receptacles, subclasses 2.1+ where electrical features are not claimed. See the class definition. Consequently patents disclosing lamps and discharge devices which have an envelope and the base thereon are not cross-referenced into this subclass solely 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:

247, 253+, 274, and 286, for devices under the class definition which have an envelope and an electrode which is supported by support structure such as lead-in conductors, wires, rods, or tubes which are supported by opposed or spaced parts of the envelope wall (double-ended devices). See subclass 247 where the device is a discharge device and the envelope has a portion of the wall formed of conductive material which is designed for use as an electrode, subclasses 253+ for other discharge devices having supporting means for a plurality of electrodes, at least one of which is so supported, subclass 274 where the device has a filament so supported, and subclass 286 for miscellaneous devices under the class definition having an electrode so supported.

315, for incandescent lamps provided with a base where the base is accurately located with respect to the filament or light emitting body so as to form a prefocused lamp.

SEE OR SEARCH CLASS

220, Receptacles, 2.1+, and see (1) Note above.

403, Joints and Connections, see (1) Note above.

439, Electrical Connectors,

611+, for electrical connectors having a vitreous envelope secured to an electrical contact or coupling part (i.e., lamp or tube base type), and see subclasses 660+ for various types of connectors, per se, which may or may not be disclosed as

being subcombinations of a lamp or space discharge device. Also, see (1) Note above.