Shadow mask heating apparatus for color CRT of the flat faceplat

Details Shadow mask heating apparatus for color CRT of the flat faceplat Shadow mask heating apparatus for color CRT of the flat faceplat

1990-12-12

1992-12-08

Seidel, Richard K.

Electric lamp or space discharge component or device manufacturi

Apparatus

432225, 432226, 392435, 219443, 445 68, H01J 900, F24J 300, H05B 368

Patent

active

051693518

ABSTRACT:
A shadow mask heating apparatus for a color CRT of the flat faceplate type includes upper and lower heated platens, each provided with heating means therein. One of the platens includes a plurality of mask support elements having a predetermined height radially disposed in an equally spaced relation on the top surface. The mask support elements preferably consist of a plurality of long and short, in length, mask support element. A plurality of passages radially formed on the top surface result between the mask support element. A plurality of adjusting pins disposed on the peripheral area of the top surface thereof of the one platen keeps the two platens separated a precise distance. The arrangement of radially disposed mask support elements minimizes shadow mask deformation during manufacture.

REFERENCES:
patent: 1213507 (1917-01-01), Lawrence
patent: 2455839 (1948-12-01), Walton
patent: 3346720 (1967-10-01), Siegla
patent: 4772238 (1988-09-01), Horn et al.

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