Liquid purification or separation – Structural installation – Closed circulating system
Patent
1977-12-20
1979-05-15
Granger, Theodore A.
Liquid purification or separation
Structural installation
Closed circulating system
417201, E04H 320
Patent
active
041546814
ABSTRACT:
A combined aerating and filtering device includes a filter box to be mounted on the side wall of an aquarium for carrying filter material through which water from the aquarium will pass to be filtered. A combined filter pump and air pump assembly is supported by the filter box and includes a housing, a motor carried within the housing, an air pump carried in the housing and driven by the motor and a filter pump driven by the motor. An air outlet is carried by the housing and connected with the air pump to thus provide means for aerating the aquarium. The filter pump extends into the filter box to draw water from the aquarium through the filter material within the filter box, and to return the filtered water to the aquarium.
REFERENCES:
patent: 2295982 (1942-09-01), Widman
patent: 2643614 (1953-06-01), Rosenkrans
patent: 2844912 (1958-07-01), Sebestg
patent: 3102483 (1963-09-01), Najimion, Jr. et al.
patent: 3261471 (1966-07-01), Halpert
patent: 3265388 (1966-08-01), Kane
patent: 3272129 (1966-09-01), Leopold
patent: 3635344 (1972-01-01), Lovitz
patent: 3744635 (1973-07-01), Horrath
patent: 3773015 (1973-11-01), Cruickshank et al.
Kershaw Robert J.
Shields Daniel W.
Aquarium Stock Company Inc.
Granger Theodore A.
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