Electron tube with improved airtight seal between faceplate and

Details Electron tube with improved airtight seal between faceplate and Electron tube with improved airtight seal between faceplate and

1998-01-27

2000-02-01

Day, Michael H.

Electric lamp and discharge devices

Photosensitive

Photocathode

313532, 250207, 250214VT, H01J 4312

Patent

active

060206845

ABSTRACT:
To provide an electron tube having good airtightness and being appropriate for mass production, indium affixed to the inner surface of a sealing metal support member is provided between a side tube and input faceplate. The input faceplate is pushed against the side tube. As a result, the indium is squeezed by a pressure receiving surface provided on the end face of the side tube. Since the pressure receiving surface is in a generally declining shape from the inside out, the force of the pressing surface causes the indium to flow outward toward the sealing metal support member. Therefore, the indium is firmly affixed to the pressure receiving surface, and the side tube and input faceplate can be reliably sealed by the indium.

REFERENCES:
patent: 3153839 (1964-10-01), Pakswer et al.
patent: 3885178 (1975-05-01), Goehner
patent: 4249668 (1981-02-01), Katayama et al.
patent: 4608517 (1986-08-01), Neuer
patent: 4961026 (1990-10-01), Funk et al.
patent: 5369257 (1994-11-01), Johnson et al.
patent: 5883466 (1999-03-01), Suyama et al.

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