Liquid purification or separation – Structural installation – Closed circulating system
Patent
1977-05-03
1979-04-10
Granger, Theodore A.
Liquid purification or separation
Structural installation
Closed circulating system
119 5, E04H 320
Patent
active
041487303
ABSTRACT:
An undergravel aquarium filter having a housing assembly which can be positioned on an aquarium tank floor underneath the gravel bed and forms a water compartment between the housing and the floor. The housing assembly includes separable inner and outer sections in fluid flow communication with each other. An upwardly extending enclosure formed on the inner section includes air inlet and outlet members. An air stream supply is provided through the inlet member to a mixing chamber within the enclosure, thereby causing water from the tank to enter the water compartment after passing through the gravel bed, and therefrom the water and air can egress through the outlet member. Seats formed in the housing assembly can accommodate the feet supporting an air pump, whereby the air pump can be easily positioned on the housing assembly during packaging. A groove formed between the inner and outer sections accommodates passage therethrough of the pump line cord during storage of the line cord within the inner section. An air hose can be stored in the outer section. Extension funnels for the outlet member can be stored between the enclosure and the air pump. This convenient integration of the parts of the filter provides a compact assembly for packaging.
REFERENCES:
patent: 2744065 (1956-05-01), Lacey
patent: 2871820 (1959-02-01), Haydon
patent: 3333701 (1967-08-01), Scafuro
patent: 3472381 (1969-10-01), Halpert
patent: 3516544 (1970-06-01), Seshultz
patent: 3720318 (1973-03-01), Cohen
patent: 3720319 (1973-03-01), White
patent: 3827560 (1974-08-01), Mortm
patent: 4035298 (1977-07-01), Clote et al.
Granger Theodore A.
Willinger Bros. Inc.
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