Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly
Patent
1988-06-22
1989-08-08
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
With assembly or disassembly
148 115N, 148 121, H01J 900, H01J 2907, C21D 946
Patent
active
048549061
ABSTRACT:
A process and material is disclosed for use in the manufacture of a tensioned mask color cathode ray tube which includes a faceplate having on its inner surface a phosphor screen, and having on opposed sides of the screen a support structure for the mask. The process comprises providing an apertured foil shadow mask characterized by being composed of a nickel-iron alloy, and securing the foil mask to the support structure while under tension and in registration with the phosphor screen. The process is further characterized by the subjection of the foil mask to a thermal cycle to partially anneal the mask to a state in which the mask has favorable magnetic and mechanical properties. The partial anneal may be accomplished as a discrete step prior to installing the mask on the support structure, or accomplished during, or as a result of, a thermal cycle in the process of sealing the tube. The material comprises a nickel-iron alloy that displays, following treatment according to the invention, characteristics that make it uniquely suited for use as a shadow mask in tensioned mask color cathode ray tubes.
REFERENCES:
patent: 2783170 (1957-02-01), Littmann
patent: 2890362 (1959-06-01), Franeken
patent: 3269834 (1966-08-01), Lykens et al.
patent: 3723106 (1973-03-01), Schlenker et al.
patent: 3894321 (1975-07-01), Moore
patent: 4135111 (1979-01-01), Verweel
patent: 4210843 (1980-07-01), Avadani
patent: 4528246 (1985-07-01), Higashinakawa
patent: 4593224 (1986-06-01), Palac
patent: 4704094 (1987-11-01), Stempfle
patent: 4756702 (1988-07-01), Steiner
Livshultz Michael
Tong Hua Sou
Ramsey Kenneth J.
Zenith Electronics Corporation
LandOfFree
Material, and assemblies for tensioned foil shadow masks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Material, and assemblies for tensioned foil shadow masks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Material, and assemblies for tensioned foil shadow masks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-903050