Method of manufacturing an electron gun

Details Method of manufacturing an electron gun Method of manufacturing an electron gun

1988-05-04

1989-08-08

Ramsey, Kenneth J.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313417, 313457, 445 34, H01J 2948, H01J 918, H01J 2982

Patent

active

048556394

ABSTRACT:
The invention relates to a method of manufacturing an electron gun for use in a cathode ray tube. The electrodes of the gun have plate-shaped fastening members (19) which at the free end partly surround an aperture (45). One step of the method is the bonding to each other of the electrodes and the supports (21, 22) by softening the supports and making the fastening members penetrate the supports. The protruding part (44) of the fastening member is at an angle with the direction of penetration, such that a constrained material flow through the aperture (45) develops. Thus, the fastening members (19) cool down and are clamped along various lines (46, 47, 48), which leads to an improved microphonic behaviour.

REFERENCES:
patent: 4096408 (1978-06-01), Bozzay et al.
patent: 4341545 (1982-07-01), Hale
patent: 4468588 (1984-08-01), Schlack
patent: 4486685 (1984-12-01), Hale et al.
patent: 4716334 (1987-12-01), Fendley et al.

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