Shadow mask stretching apparatus for flat cathode ray tube

Details Shadow mask stretching apparatus for flat cathode ray tube Shadow mask stretching apparatus for flat cathode ray tube

1991-02-27

1993-02-02

Seidel, Richard K.

Electric lamp or space discharge component or device manufacturi

Apparatus

Assembly means

445 30, 29448, H01J 9236, B23P 1102

Patent

active

051834260

ABSTRACT:
A foil-type shadow mask stretching apparatus for a flat cathode ray tube comprises a clamping device in the shape of an elipse, a circle, other similar shapes. The clamping device has a clamping lane with inclined projections arranged in a tooth-like manner; a ring-shaped push pad having a shape abuttingly compatible with to the clamping lane, and C-shaped clamping rings for tightly pressing the push pad onto the clamping lane, whereby the shadow mask is clamped between the clamping lane and the push pad. The shadow mask stretching apparatus prevents abnormal deformation and wrinkling caused by contraction of a shadow mask.

REFERENCES:
patent: 3704511 (1972-12-01), Hooker
patent: 4562634 (1986-01-01), Watts
patent: 4704094 (1987-11-01), Stempfle

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