US PATENT SUBCLASS 313 / 7
WITH EVACUATING PUMP


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

7WITH EVACUATING PUMP


DEFINITION

Classification: 313/7

(under the class definition) Subject matter where the lamp or discharge device is provided with an envelope and has an evacuating pump connected to the envelope for evacuating the envelope.

(1) Note. In the devices in this subclass the evacuating pump is designed for connection to the lamp or discharge device during the use of the lamp or discharge device. Where

the arrangement is only for use during the manufacturing of the lamp or discharge device see the reference to Class 226 below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

549+, for devices under the class definition provided with envelopes and having a getter, a gas or vapor generating means or a pressure regulating means associated therewith.

SEE OR SEARCH CLASS

53, Package Making, 79+, and 403+ for methods of and apparatus for gas filling and/or evacuating receptacles combined with closing including lamps and discharge devices, and see the Notes to subclass 403 for the disposition of related art.

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

4, 8 and 65+ for methods of and apparatus for inducing a gas or vapor into or evacuating the envelope of an electric lamp or space discharge device.

315, Electric Lamp and Discharge Devices: Systems,

108+, for electric lamp or a gas or vapor type discharge device systems where the lamp or discharge device is provided with means for regulating the pressure within the envelope of the device and the system includes means to supply electrical energy to the lamp or discharge device or to control the pressure regulating means.

378, X-Ray or Gamma Ray Systems or Devices,

123, for X-ray tube systems where the X-ray tube is provided with means for controlling the pressure within the envelope of the tube.

417, Pumps, appropriate subclasses for miscellaneous evacuating pumps.