.~ Interposed electrode with non-uniform mesh area (e.g., variable mu)
DEFINITION
Classification: 313/295
(under subclass 293) Discharge devices which have a foraminous or grid-like electrode interposed in the inter-electrode space, the foraminous or grid-like electrode having the ratio of area of free passage through the openings in the electrode to the obturating area of the electrode in one region different from such ratio in another region of the electrode.
(1) Note. This subclass includes discharge devices having a foraminous or grid-like electrode interposed between two other electrodes where the foraminous or grid-like electrode has at least one opening in the electrode of a different area from the area of another of the openings, or where the openings in the electrode are nonuniformly spaced with respect to each other, or where the electrode is formed of a wire coil or helix which has a nonuniform pitch for the turns of the coil or helix.
(2) Note. Some of the devices in this subclass are intended to be used as variable-mu discharge devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
349, for foraminous and grid-like electrodes which have a
ratio of free passage area to obturating area in one region of the electrode which is different from such ration in another region of the electrode.
