Modular tube shadow mask support system
AssigneeRCA Corporation
InventorJohn A. van Raalte
Life of this patent
Estimating the term…
Abstract
A display device includes an evacuated envelope having a mosaic phosphor screen deposited on a front wall. A substantially rectangular frameless shadow mask having mounting means extending from two oppositely disposed edges of the shadow mask is in spaced, parallel relation to the screen. A shadow mask suspension system includes at least two mutually parallel support bars disposed on the front wall beyond the screen area. Shadow mask mounting means slots are in the distal surface of the support bars. A locking member engages each of the support bars to retain the mounting means within the slots.
Claims5
In a display device having an evacuated envelope with a front wall and a screen on the internal surface of said front wall, an electron generating means, and a segmented shadow mask spaced from said screen, a shadow mask suspension system comprising:
- a plurality of elongated support members arranged along said front wall on opposite sides of said screen and substantially parallel to one dimension of said screen, each of said support members including a plurality of slots substantially equally spaced along said one dimension;
- said shadow mask including a plurality of segments, each of said segments having mounting tabs at both ends, said tabs being dimensioned substantially equally to said slots and engaging said slots to prevent motion of said segments in said one direction, each of said segments bridging said screen in the other dimension of said screen and said segments cumulatively spanning said screen in said one direction, said support members supporting said segments a predetermined distance above said screen to establish the q spacing of said display device.
Dependencies are inferred from the claim text.