(under the class definition) Subject matter in which (1) the fluid is pumped by or the pumping effect relies upon the direct action thereon of electrical means or a magnetic field, or (2) the fluid is "pumped" or trapped by means of a getter.
(1) Note. This is the residual home for the creation of a vacuum in an enclosed space by means of a gettering action as defined in (2) Note below. This and indented subclasses include the combination of the chamber to be evacuated and the gettering means. It also includes significant claimed containers holding getter material for disposition in a chamber to be evacuated.
(2) Note. A getter is a material which, when placed in an enclosed space, reduces the gas or vapor content of the space either by a chemical or physical action.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322, for pumps having a chamber which is expanded and contracted by an electrical or magnetostrictive action on the walls thereof.
SEE OR SEARCH CLASS
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 255+, for a loose metal particle composition.
96, Gas Separation: Apparatus,
108+, for solid sorbent apparatus for separating vaporous or gaseous constituents. The subject matter classified in Class 96 may be intended to create a vacuum in an enclosed space, but must selectively separate one constituent from another. Thus, Class 96 does not take solid sorbent apparatus or any other means intended to sorb all of the gas or vapor constituents in a chamber.
204, Chemistry: Electrical and Wave Energy,
192.1+, for processes for coating or forming an article by cathode sputtering and subclass 298.01 for cathode sputtering apparatus to coat or form an article.
252, Compositions,
181.1+, for getters and gas or vapor generating materials, per se, and also for such materials claimed as being in a container, but where no structure of the container is claimed.
313, Electric Lamp and Discharge Devices,
545, 566 for electric lamps and space discharge devices which include a getter or gas or vapor generating material as a part thereof.
406, Conveyors: Fluid Current, appropriate subclasses for systems which transport solids by means of a fluid current, and which include a pump for generating the fluid current. See particularly
10+, for control circuits for pump drives, which are responsive to a sensed condition, and subclasses 45 and 46+ for subject matter relating to the pumping and transportation of slurries. 445, Electric Lamp or Space Discharge Component or Device Manufacturing,
38+, 53+ and 73 for methods and apparatus for evacuating electric lamp and space discharge devices and including some step or means limited to the manufacture or repair of electric lamp or space discharge device.
