Illuminated advertising display device with changing visual effe

Details Illuminated advertising display device with changing visual effe Illuminated advertising display device with changing visual effe

1979-06-08

1981-01-27

Pitrelli, John F.

Card, picture, or sign exhibiting

Display with special effects

Electromotor operated

40219, 40476, 40579, 40582, G09F 1306, G09F 1312

Patent

active

042467136

ABSTRACT:
An illuminated advertising display device produces changing visual effects by placing a panel having a pattern of holes at the front of a light box with some of the holes defining alpha-numeric characters, and reciprocating behind the panel a shutter which has a pattern of transparent spots each of which registers with a hole in the panel at some point in the reciprocation of the shutter, with some of the spots registered simultaneously with all the holes that define the alpha-numeric characters. The panel has a forwardly facing reflective surface, and spaced forwardly of the panel is a light transmitting reflective sheet. If desired, the transparent spots may be tinted in several different colors.

REFERENCES:
patent: 1172360 (1916-02-01), Hildburgh
patent: 2221887 (1940-11-01), White
patent: 2221888 (1940-11-01), White
patent: 3160975 (1964-12-01), Malina
patent: 3747243 (1973-07-01), Schneider
patent: 3883966 (1975-05-01), Ludwig
patent: 3961434 (1976-06-01), Sampon
patent: 4005538 (1977-01-01), Tung

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