Animal husbandry – Entomological culture device – Egg treatment – production – or storage
Patent
1983-06-10
1984-12-18
Therkorn, Ernest G.
Animal husbandry
Entomological culture device
Egg treatment, production, or storage
210629, 210170, 210220, 210232, 261120, 261122, 261124, A01K 6100, C02F 302
Patent
active
044885083
ABSTRACT:
A low pressure valveless floating aeration system for providing oxygen and circulation to a water impoundment, utilizing one or more floating elongate members supporting a substantially uniform assemblage of air diffusers spaced above the bottom of the impoundment. Air at a comparatively low pressure is supplied to said elongate members and thence to said air diffusers, such that a large number of tiny bubbles will rise up from the air diffusers through the water of the impoundment, bringing about a desirable amount of circulation in the water. Because the air diffusers are suspended from members floating on the water surface, the depth at which the diffusers are located can be made uniform, or the diffusers can be suspended at gradually decreasing depths at locations remote from the air supply.
REFERENCES:
patent: 2960321 (1960-11-01), Stoots
patent: 3006476 (1961-10-01), Haplert
patent: 3083895 (1963-04-01), Welles
patent: 3189334 (1965-06-01), Bell
patent: 3320928 (1967-05-01), Smith
patent: 4215082 (1980-07-01), Danel
patent: 4240376 (1980-12-01), Kominami
patent: 4287062 (1981-09-01), von Nordenskjold
Renfro Julian C.
Therkorn Ernest G.
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