Aquarium pump with aeration

Details Aquarium pump with aeration Aquarium pump with aeration

1976-08-19

1977-08-23

Granger, Theodore A.

Liquid purification or separation

Structural installation

Closed circulating system

415215, 417424, E04H 316

Patent

active

040439143

ABSTRACT:
A pump has a large upper chamber containing an outlet, a smaller lower chamber containing an inlet, a flared transition portion between the lower and upper chambers, a driven vertical impeller extending within the chambers and the transition portion, and an aeration device in the transition portion, the aeration device being a projection into the transition portion with an upward slope facing the movement of the impeller therepast and an edge in the direction of rotation of the impeller, and an air valve controlling air flow through a channel leading into the pump at the edge of the projection.

REFERENCES:
patent: 3738620 (1973-06-01), Ennis
patent: 3744635 (1973-07-01), Horrath

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