US PATENT SUBCLASS 445 / 16
.~.~ With gas introduction


Current as of: June, 1999
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445 /   HD   ELECTRIC LAMP OR SPACE DISCHARGE COMPONENT OR DEVICE MANUFACTURING

1  DF  PROCESS {13}
9  DF  .~ Generating gas or vapor within an envelope, or coating by vapor, gas, mist or smoke within the envelope {12}
16.~.~ With gas introduction


DEFINITION

Classification: 445/16

With gas introduction:

(under subclass 9) Method in combination with the operation of bringing or producing from an outside source gaseous material into the enclosure of the lamp or discharge device.

SEE OR SEARCH CLASS

53, Package Making, for methods including introducing gas, vapor or liquid into a portable receptacle. An electric lamp and an electric space discharge device are deemed to be encompassed by the term "portable receptacle" when there are no claimed limitations restricting the method or apparatus to the manufacture and/or repair of Class 445 devices, e.g., (1) limitation to electrode heating or assembly of components other than an envelope closure would require classification in this class (445) while mere heating of an envelope during evacuating would not require exclusion from Class 53; (2) methods and apparatus for such methods, which include performing a chemical reaction to eliminate gas or vapor by reacting the gas or vapor with some chemical to form a nonvolatile compound; or which include performing a chemical reaction to generate gas or vapor - whether the reaction is performed outside of or within the envelope when the method or apparatus is directed to use in manufacturing a lamp or

discharge device are excluded from Class 53 and classified in this class. See especially

403+, for processes of gas filling and/or evacuating combined with closing and subclasses 79+ for equivalent apparatus.

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

4+, for methods and subclasses 65+ for apparatus pertaining to the evacuation of and/or filling receivers with gas or vapor including lamps or electric space discharge devices.