Animal husbandry – Entomological culture device – Egg treatment – production – or storage
Patent
1976-09-29
1978-07-04
Coughenour, Clyde I.
Animal husbandry
Entomological culture device
Egg treatment, production, or storage
119 3, 210169, A01K 6300
Patent
active
040982300
ABSTRACT:
An aquarium having an aquarium bed, such as gravel, within an aquarium tank defined by a bottom wall and side and end walls and a drain and filter structure therefor. The aquarium includes means for continuous filtration and aeration and including air moving means. The aquarium drain and filter structure includes the bed and sub-bed filter means including a support member within the aquarium tank and positioned to define a lower water receiving compartment having communication with a drain and to provide a support for a plurality of drain members each having a flow passage therethrough. A foraminous member is in overlying relation with the drain members and supports the aquarium bed thereon. The structure also includes a power filter, controls, and ducts for selectively moving water and debris from the lower water receiving compartment and through the filter all being operative to remove debris therefrom and to return filtered water to the aquarium tank.
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patent: 3324829 (1967-06-01), De Jose et al.
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patent: 3971338 (1976-07-01), Alexson
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