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 Title: |
US5349771:
Rising bubble display device
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Burnett, Kenneth; Lincolnwood, IL
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| Assignee: |
Midwest Tropical, Inc., Lincolnwood, IL
other patents from MIDWEST TROPICAL, INC. (702630) (approx. 7)
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| Published / Filed: |
1994-09-27
/ 1992-05-21
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| Application Number: |
US1992000887171
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| IPC Code: |
Advanced:
G09F 13/24;
Core:
G09F 13/00;
IPC-7:
G09F 19/00;
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| ECLA Code: |
G09F13/24;
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| U.S. Class: |
Current:
040/406;
040/439;
285/140.1;
Original:
040/406;
040/439;
285/161;
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| Field of Search: |
040/406,407,439,441,581
285/158,161,205,219
119/248,245,269,254
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| Priority Number: |
| 1992-05-21 |
US1992000887171 |
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| 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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| Attorney, Agent or Firm: |
Willian Brinks Hofer Gilson & Lione ;
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| Primary / Asst. Examiners: |
Dorner, Kenneth J.; Davis, Cassandra
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| Maintenance Status: |
E3 Expired Check current status
CC Certificate of Correction issued
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 13 claims |
I claim:
1. In a rising bubble display device comprising a reservoir configured to contain a liquid, a pump, at least one conduit coupled to the pump and defining an array of orifices positioned in the reservoir such that the pump introduces bubbles of a fluid into the reservoir via the orifices and the bubbles of fluid move upwardly in the reservoir, and a lamp positioned to illuminate the bubbles of fluid in the reservoir, the improvement comprising:
- a colored translucent element; and
- a retainer mounted adjacent the reservoir, said retainer shaped to define a recess adjacent one end of the reservoir shaped to slideably receive the colored translucent element, said retainer releasably retaining the colored translucent element in place between the lamp and the conduit such that the colored translucent element is positioned to color light from the lamp incident on the reservoir, said colored translucent element slidable in said recess, said retainer configured to allow ready removal and replacement of the colored translucent element.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 37 U.S. patent(s) that reference this one
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