Aquarium wave-making water return device

Details Aquarium wave-making water return device Aquarium wave-making water return device

1999-09-14

2001-11-27

Poon, Peter M. (Department: 3643)

Animal husbandry

Aquatic animal culturing

Aquarium

Reexamination Certificate

active

06321683

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a water return device for making water-waves in an aquarium, and more particularly for more uniformly making water-waves.
Some devices for making water-waves in aquariums are known. However, these conventional devices have the shortcoming that the mechanisms for making water-waves tend to lack smooth, uniform operation. As a result, waves of return water are inconsistently generated in the aquarium or are at least not generated uniformly and regularly through the aquarium to more accurately imitate ocean wave action in the relatively small volume of such tanks.
BRIEF SUMMARY OF THE INVENTION
According to a first aspect, the present invention is a device for making waves of water in an aquarium tank, comprising: an inlet to receive water, an outlet to discharge said water into said aquarium tank, said outlet is rotatable with respect to said inlet around an axis concentric with said inlet; a fluid connection between said inlet and outlet, said connection including two pipes concentrically and rotatably fitted together one inside an other, said one pipe is connected with one end of said inlet at one end of said one pipe, while said other pipe is connected with one end of said outlet at one end of said other pipe, said one pipe supporting said other pipe and said outlet for rotation on said one pipe, and an actuator coupled to at least one of said other pipe and said outlet so as to rotate said outlet around said axis so as to make waves of said water in said aquarium tank.
According to a second aspect, the present invention is a device for making waves of water in an aquarium tank, comprising: an inlet to receive water; an outlet to discharge said water into said aquarium tank; a fluid connection between said inlet and outlet; a motor with a motor shaft electrically rotated around an axis thereof, and a rigid linkage to convert rotation of said motor shaft into rotation of said outlet around an axis thereof, by using only a plurality of rigid links to transmit motion from said motor shaft into said outlet, so as to make waves of said water in said aquarium tank.


REFERENCES:
patent: 4966096 (1990-10-01), Adey
patent: 5026477 (1991-06-01), Yen
patent: 5097795 (1992-03-01), Adey
patent: 5732657 (1998-03-01), Idbeis
patent: 5782204 (1998-07-01), Rahn
Freshwater and Marine Aquarium Magazine, published by R/C Modeler Corporation, Sierra Madre, CA 91024, Mar. 1998, copies of cover and pp. 1,20 and 101.

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