Color picture tube having an improved support structure for a co

Details Color picture tube having an improved support structure for a co Color picture tube having an improved support structure for a co

1984-03-29

1986-02-25

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313406, 313407, H01J 2907

Patent

active

045729832

ABSTRACT:
An improved color picture tube according to the invention includes an evacuated envelope enclosing a substantially rectangular cathodoluminescent screen, a color selection electrode suspended in register with the screen by a support structure, and an electron gun. The support structure includes a plurality of studs attached to the envelope adjacent to the corners of the screen. The support structure also includes a plurality of spring assemblies. Each spring assembly includes a first bimetal member attached to the color selection electrode and a second bimetal member having an aperture therein for engaging one of said studs. The first and second bimetal members provide longitudinal and rotational compensation, respectively, for maintaining the color selection electrode in register with the screen when the electrode and the spring assemblies are heated.

REFERENCES:
patent: 3617787 (1971-11-01), Emmasingel
patent: 3700948 (1972-10-01), Palac
patent: 3754157 (1973-08-01), Yamazaki et al.
patent: 3803436 (1974-04-01), Morrell
patent: 3894260 (1975-08-01), Sedivy
patent: 3896071 (1976-10-01), Groot
patent: 3986072 (1976-10-01), Adamski
patent: 4358702 (1982-11-01), Gijrath et al.
patent: 4491763 (1985-01-01), Fujinuma et al.
A. Morrell, H. Law, E. Ramberg and E. Herold, Color Television Picture Tubes, 100-102, 104-107, Academic Press, (1974).

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