CRT having a tension mask with reinforcing support means
OwnerCarlo Tulli, Paolo Ginesti +2inventors
InventorsCarlo Tulli, Paolo Ginesti, Pedro Eugenio Cosma, Alessio Masi
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Abstract
Cathode-ray tube (1) comprising a frame/mask assembly for selecting colors having a mask (8) and a frame (19), the mask being held under tension by being attached to ends of long sides (9) of the frame, the frame/mask assembly being suspended inside the tube using support means (10) which are able to increase the mechanical rigidity of the frame by support means having longitudinal dimples (40) which cause the long sides of the frame to come together during the high-temperature manufacturing phases.
Claims7
A color cathode-ray tube having a glass front face on which a phosphor screen is deposited, a color selection mask placed close to the screen, a frame to which the mask is attached and which holds the mask under tension in at least one direction, the frame being of substantially rectangular shape defined by a pair of opposed long sides and a pair of short sides which are also opposed, the frame/mask assembly being held inside the front face by support means comprising:
- at least two opposed sides of the frame comprise mechanical reinforcing means in the form of a metal plate fastened to the sides, close to the comers of the frame, the plates comprising a longitudinal dimple lying at least partially in the direction of tension of the mask.
Dependencies are inferred from the claim text.