Aquarium filter device

Details Aquarium filter device Aquarium filter device

1997-08-14

1999-01-26

Woo, Jay H.

Liquid purification or separation

Structural installation

Closed circulating system

210232, A01K 6304

Patent

active

058634266

ABSTRACT:
An aquarium filter device has a base seat, an air bubble producing device, a hollow lower casing, a hollow lower cylinder, a hollow upper cylinder, and a top disk. The base seat has an upper ring, a center hole, a tube, a pipe, and a vent passage. The air bubble producing device has a lower rod inserted in the tube. The hollow lower casing has an upper annular flange, a through hole, and an annular insertion groove. The hollow lower cylinder has a first opening, a plurality of first annular plates, a plurality of first ribs connected to the first annular plates, and an insertion end on a bottom of the hollow lower cylinder inserted in the through hole. The hollow upper cylinder has a second opening, a plurality of second annular plates, a plurality of second ribs connected to the second annular plates, and an insertion end on a bottom of the hollow upper cylinder inserted in the first opening. The top disk has a hollow center sleeve inserted in the second opening. A sponge housing encloses the hollow lower cylinder and the hollow upper cylinder.

REFERENCES:
patent: 3816026 (1974-06-01), Isaacson et al.
patent: 3947362 (1976-03-01), Etani
patent: 5203990 (1993-04-01), Gargiulo
patent: 5419831 (1995-05-01), Fuerst et al.

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