Card – picture – or sign exhibiting – Display device with gas or liquid movement
Patent
1992-05-21
1994-09-27
Dorner, Kenneth J.
Card, picture, or sign exhibiting
Display device with gas or liquid movement
40439, 285161, G09F 1900
Patent
active
053497716
ABSTRACT:
A rising bubble display device includes a reservoir with a lamp positioned beneath the reservoir. An air pump is mounted adjacent the lamp to pump air via orifices located at the base of the reservoir. A translucent colored element is interposed between the lamp and the reservoir, and this colored element is releasably retained in place such that the user can readily substitute one colored element for another to change the color of the illuminating light. An orifice defining tube is mounted to the reservoir by a sleeve and a threaded cap to provide the necessary seal while allowing ready removal of the orifice defining tube. The reservoir is secured to the base in channels, and the tube is connected to the air pump with a check valve. In this way, the reservoir can readily be isolated from the pump and removed from the base for service. The upper end of the reservoir is covered and a liquid containment element is positioned to extend down into the reservoir and to substantially fill the open end of the reservoir to prevent liquid from escaping from the reservoir.
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Sales Brochure "Aquatic Concepts" Midwest Tropical, Inc., Lincolnwood, Ill. 1991.
Davis Cassandra
Dorner Kenneth J.
Midwest Tropical, Inc.
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