Method and apparatus for stretching interchangeable tension mask

Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

445 68, 72296, 1011271, H01J 900

Patent

active

051620081

ABSTRACT:
An apparatus and method for differentially stretching a flat tension mask to register apertures in the mask with an undedicated screen on a CRT faceplate. Stretching is accomplished biaxially on the mask with a plurality of separate clamping elements along all four sides of the mask. Various methods and means are disclosed for applying a fixed ratio of forces to the clamps to maintain strain in the mask substantially uniform across the entire mask, such as a "wiffle tree" linkage and selected spring rate springs. Growth of the mask during stretching is accommodated by allowing the clamps to move laterally or perpendicular to the stretching forces. Fragile slit aperture masks are stretched with clamps having tangential component stretching forces. Individual and/or groups of clamps can be controlled independently of others to correct for localized mask or screen defects. The clamps move in unison toward the mask to a clamp engagement position where they are precisely aligned in a starting position. With the mask precisely located and held, the clamps are engaged. The clamps and mask are then released by their aligning devices and stretching begins.

REFERENCES:
patent: 2824594 (1958-02-01), Gray, I
patent: 3299688 (1967-01-01), Gray, II
patent: 3579718 (1971-05-01), Miller et al.
patent: 4041861 (1977-08-01), Alter
patent: 4753379 (1988-06-01), Blasberg et al.
patent: 4902257 (1990-02-01), Adler et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for stretching interchangeable tension mask does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for stretching interchangeable tension mask, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for stretching interchangeable tension mask will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2290561

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.