Color cathode ray tube with improved shadow mask mounting system

Details Color cathode ray tube with improved shadow mask mounting system Color cathode ray tube with improved shadow mask mounting system

1997-12-23

1999-11-09

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313402, H01J 2980

Patent

active

059820853

ABSTRACT:
An apertured shadow mask directs electron beams toward phosphor elements on the inside surface of the face plate of a CRT. The mask is fixed to a rectangular frame having corner brackets connected by light-weight diaphragm strips and resilient plates molded to the brackets. The resilient plates have holes toward the distal ends thereof which engage pins embedded in a skirt surrounding the face plate. The plates are precipitation hardened stainless steel having a thickness of 0.20 mm to 0.30 mm and provide sufficient spring force to retain the mask and frame as well as the internal magnetic shield which is fixed to the corner brackets by clips.

REFERENCES:
patent: 3935496 (1976-01-01), Gijrath
patent: 3986071 (1976-10-01), Groot
patent: 3986072 (1976-10-01), Adamski
patent: 3999098 (1976-12-01), Dougherty
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patent: 5072151 (1991-12-01), Spina
patent: 5676863 (1997-10-01), Kim et al.
"An Improved Shadow-Mask System for Large Size CRTs" by Richard C. Bauder and F.R. Ragland, SID Int'l Technical Papers (1990) pp. 426-429, Jan. 1, 1990.
"Corner Lock Suspension" by Robert L. Donofrio, Nov. 1995, Information Display, pp. 12-19.

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