Anode foil holder for broad beam electron gun

Details Anode foil holder for broad beam electron gun Anode foil holder for broad beam electron gun

1980-04-28

1982-06-01

Gensler, Paul L.

Electric lamp and discharge devices

Cathode ray tube

Electron permeable window

328233, H01J 3304

Patent

active

043330363

ABSTRACT:
A foil covering for the apertured exit window for a broad beam electron gun is placed in tension by stretching it over a raised edge which extends parallel to one of the dimensions of the aperture pattern, thereby creating a hollow space between the foil and the exterior surface of the housing adjacent to the exit window apertures, and then sealing the circumference of the foil to the exterior surface of the housing. When the housing is evacuated, the ambient air pressure presses the foil into this hollow space and thereby stretches the foil taut over the exit window aperture to remove any potential creases or folds in the foil.

REFERENCES:
patent: 3863163 (1975-01-01), Farrell et al.
patent: 4061944 (1977-12-01), Gay

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