H - Electricity – 01 – J
Patent
H - Electricity
01
J
316/11
H01J 9/00 (2006.01) H01J 29/07 (2006.01)
Patent
CA 1145813
10-4-1979 1 PHD 78-065 ABSTRACT. "Method of manufacturing a colour television display tube". In various steps of the method of manufacturing a colour television display tube, parts have to be aligned exactly with respect to each other, for example, alignment of the mask sheet with respect to the mask supporting frame during the manufacture of the colour selection electrode, alignment of the colour selection electrode in the face plate during the connection of the holding plate in the south point, furthermore several times laying down the colour selection electrode in the face plate during the three exposures for providing the phosphors of different colours. In most of the above-mentioned cases the "seating" of the parts was endeavoured by manual pressure, considerable differences being the result. By the use of electromagnets which are energized with an alternating voltage and by which magnetic attractive forces are exerted on the parts, the parts are vibrated to their position in a few seconds.
327937
Goddecke Hubert
Reichardt Werner
Schumacher Kurt
Topfer Rainer
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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