Electric lamp or space discharge component or device manufacturi – Apparatus – Assembly means
Patent
1987-05-18
1988-12-13
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Apparatus
Assembly means
269 40, 269254R, 430 23, 24462, 160371, H01J 9227
Patent
active
047907860
ABSTRACT:
A reusable factory fixture frame is disclosed for use in the manufacture of a color cathode ray tube having a flat faceplate and a tensed foil shadow mask. The frame provides for mounting an in-process shadow mask during photoexposure of an in-process faceplate in a lighthouse. The frame comprises generally rectangular frame means and quick-release mechanical mask-retaining means for temporarily and removably supporting an in-process shadow mask in tension. The frame has at least first six-point indexing means on a first side for registration with complementary registration-affording means on an exposure lighthouse, and second six-point indexing means on a second, opposed side for registration with complementary registration-affording means on an in-process faceplate. As a result, the in-process shadow mask can be precisely registered and re-registered with the lighthouse and the in-process faceplate for the photoexposure of the in-process faceplate while retaining the in-process shadow mask in tension.
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Grimes et al., "Improvements in the RCA Three-Beam Shadow Mask Color Kinescope", IRE Jan. 1954, R583.6.
Ramsey Kenneth J.
Zenith Elecronics Corporation
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