Bubble generating device

Details Bubble generating device Bubble generating device

2000-11-30

2002-05-21

Bushey, C. Scott (Department: 1724)

Gas and liquid contact apparatus

Contact devices

Liquid tank

C261S122100, C210S242200

Reexamination Certificate

active

06390456

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a bubble generating device having a float and a weight to maintain the device in a desired position in the water and air enters into the device to generate bubbles in the water.
BACKGROUND OF THE INVENTION
A conventional bubble generating device is shown in FIG.
1
and generally includes a two blade means
101
driven by a motor
100
. The bubble generating device is floated on water such as a pond, and the blade means
101
rotated to splash water in the air so that the water become many tiny water drops and fall into the water so as to increase the oxygen in the water. However, the bubble generating device cannot bear strong wind and the blades of the blade means
101
can only affect the water on the top surface of the water.
FIG. 2
shows another bubble generating device which has two blades
102
on a shaft
103
and the device can be sunk in water. The blades
102
stir the water in the casing
104
of the device to generate bubbles. This is a bulk device and requires a motor to drive the shaft and a gear reduction device to adjust the speed of the shaft. This is costly and the device cannot operate in deep water.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a bubble generating device and includes a central tube having a hollow interior and. a float is connected to the central tube. A pipe is connected to the central tube and communicates with the hollow interior of the central tube. The central tube extends through a disk and a peripheral wall extends from the disk. A porous film is fixedly mounted to the peripheral wall of the disk. A passage communicates between the hollow interior of the central tube and a space between the disk and the porous film so that when air comes into the passage, bubbles are generated via the porous film.
The primary object of the present invention is to provide a bubble generating device that can be operated in desired depth of water and the has a simple structure.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.


REFERENCES:
patent: 3746323 (1973-07-01), Buffington
patent: 4229302 (1980-10-01), Molvar
patent: 4288394 (1981-09-01), Ewing et al.
patent: 4448689 (1984-05-01), Von Nordenskjold
patent: 4735750 (1988-04-01), Damann
patent: 4797063 (1989-01-01), Lot
patent: 4820457 (1989-04-01), Jager
patent: 5690864 (1997-11-01), Tyer
patent: 5858283 (1999-01-01), Burris
patent: 1207073 (1960-02-01), None

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