Liquid purification or separation – Flow – fluid pressure or material level – responsive – Float
Patent
1991-04-24
1992-11-03
Hruskoci, Peter
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Float
210130, 210169, 2104162, 119 5, A01K 6304
Patent
active
051606070
ABSTRACT:
A filter for aquarium has a housing having a bottom chamber and at least one filter compartment for a filter material located above the bottom chamber, a supply arranged so that water is supplied from above so as to pass the filter compartment and float to the bottom chamber, a pump for pumping water from the bottom chamber back into the aquarium, so that the filter operates as alternating lifting-lowering filter. Each of the filter compartments has at least one overflow aspiration lifting device with an inlet located at a base side and substantially at a height of a bottom of the filter compartment and an outlet which opens downwardly toward a next one of the filter compartments.
REFERENCES:
patent: 4156401 (1979-05-01), Ogui
patent: 4498417 (1985-02-01), Richter
patent: 5098585 (1992-03-01), Woltman et al.
Schottner Walter
Thiemer Helmut
Voss Peter
Eheim GmbH & Co. KG
Hruskoci Peter
Popovics Robert James
Striker Michael J.
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