Electron tube sealing structure

Details Electron tube sealing structure Electron tube sealing structure

1988-11-16

1990-02-13

Yusko, Donald J.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313106, 313107, 313256, 313260, 313261, 313446, 313456, H01J 190, H01J 1944

Patent

active

049009737

ABSTRACT:
In an electron tube sealing structure, a cylindrical insulator is metallized to produce metallized layers on both end surfaces, and sealing metal members are soldered to the metallized layers correspondingly, so that a vacuum chamber is provided in the interior of the cylindrical insulator. The cylindrical insulator is provided with at least one salient portion at an inner end thereof. The salient portion is parallel to a direction of an electric field produced by a voltage applied across the sealing metal members, and shields one of the metallized layers which is positioned on the side of a negative electrode in regard to the vacuum chamber, so that the emission of electrons is avoided from the corresponding metallized layer to prevent a creeping discharge from being induced on the inner surface of the cylindrical insulator.

REFERENCES:
patent: 2859372 (1958-11-01), Stangl
patent: 3227905 (1966-01-01), Talcott

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