Method of making a tensioned focus mask

Details Method of making a tensioned focus mask Method of making a tensioned focus mask

1995-07-26

1997-03-25

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

H01J 914

Patent

active

056138890

ABSTRACT:
The present invention provides a method of making a tensioned focus mask. Such a mask includes a set of parallel strands and a set of parallel wires that are perpendicular to the strands and separated from the strands by insulator means. The method includes attaching the strands to a mask frame and then coating the strands with a first insulator. The first insulator is then cured, and a second insulator is applied to the first insulator. Next, wires are wound over and in contact with the second insulator, by rotating the mask frame and by drawing a continuous wire from a source through a tensioner, while guiding the continuous wire into desired positions overlying the strands. Finally, the second insulator is heated until the wires attach to the second insulator.

REFERENCES:
patent: 2999300 (1961-09-01), Sandor
patent: 3357459 (1967-12-01), Cahen et al.
patent: 3722044 (1973-03-01), Law
patent: 4470822 (1984-09-01), Bloom et al.

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