Filter for aquarium apparatus

Details Filter for aquarium apparatus Filter for aquarium apparatus

1994-03-23

1995-09-26

Dawson, Robert A.

Liquid purification or separation

Structural installation

Closed circulating system

210121, 210151, 2104162, 210456, 119259, 119260, A01K 6304

Patent

active

054531829

ABSTRACT:
A filter for an aquarium apparatus includes a filter tank casing, a filter unit accommodated in the filter tank casing for filtering water from a tank and returning filtered water thereto, a water pool section for collecting water from the tank and supplying water overflowing therefrom directly to a filter material of the filter unit. The filter unit physically and biologically filters water from the tank and returns filtered water thereto.

REFERENCES:
patent: 3468288 (1969-09-01), Cassill
patent: 3638795 (1972-02-01), Feddern et al.
patent: 3768652 (1973-10-01), Jardim
patent: 3848567 (1974-11-01), Garber, Jr.
patent: 3994807 (1976-11-01), Macklem
patent: 4151810 (1979-05-01), Wiggins
patent: 5062950 (1991-11-01), Shieh
patent: 5160622 (1992-11-01), Gunderson et al.

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