Card – picture – or sign exhibiting – Display device with gas or liquid movement
Patent
1996-01-29
1997-04-08
Green, Brian K.
Card, picture, or sign exhibiting
Display device with gas or liquid movement
40407, 239 17, G09F 1900
Patent
active
056176570
ABSTRACT:
A multi-color liquid display system comprising a transparent conduit and system for sequentially circulating liquids of different color and different specific gravity through the conduit to present a dynamic display such as "raining" of one liquid into another. The circulating system includes a reservoir, a pump, device for communicating liquids in the reservoir with the transparent conduit, and device for controlling the proportionate flow of the different colored liquids from the reservoir. The display system includes a panel assembly in which a front transparent panel is bonded to a second transparent panel in spaced relation thereto and the conduit for liquids is formed in a desired configuration between the panels. The sign is illuminated by back lighting and the front panel is coated to mask all but the portions of the sign to be illuminated. The corridor can be configured with an enlarged chamber and a narrower contiguous portion with openings to the chamber whereby a first circulated liquid is received in the chamber and portions of a second different colored liquid are flowed into the chamber to simulate "raining" therein.
REFERENCES:
patent: 2145747 (1939-01-01), Askew
patent: 2621430 (1952-12-01), Neville
patent: 2645048 (1953-07-01), Adams
patent: 4144663 (1979-03-01), Saenger et al.
patent: 5075992 (1991-12-01), Kahn
Green Brian K.
Marnock Marvin J.
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