Centrifugal pump especially for aquariums
AssigneeNewa S.R.L.
InventorsAntonio Strada, Alain Bertschy, Giacomo Guoli, Edmund J. Mowka, Jr.
Life of this patent
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Abstract
A submersible centrifugal pump especially for aquariums includes a motor driven impeller for circulating water through the pump and a movable flow indicator visible from the exterior of the pump for visually indicating the water flow rate through the pump. The impeller is mounted on a hollow motor shaft which protrudes above the pump to provide for the passage of air down through the shaft for mixing with the water within the pump. The shaft is rotatable relative to the impeller to permit turning of a valve shutter connected thereto relative to a valve seat for controlling the water flow rate through the pump.
Claims44
A submersible water pump especially for aquariums comprising a pump body having a water inlet, a water outlet, water passage means between said inlet and outlet, pump means for pumping water from said inlet through said passage means to said outlet, and visual indicating means on said pump body for visually indicating the water flow rate through said pump.
A submersible water pump for aquariums comprising a pump body containing a pumping chamber, a water inlet and water outlet communicating with said pumping chamber, an impeller in said pumping chamber, motor means for driving said impeller, said motor means including a rotor drivingly connected to said impeller and shaft means for rotatably supporting said rotor and impeller within said pump body, said shaft means being rotatable relative to said rotor and impeller, and valve means in said inlet operable by rotation of said shaft means to control the water flow rate through said inlet.
A submersible water pump for aquariums comprising a pump body containing a pumping chamber, a pump inlet and pump outlet communicating with said pumping chamber, an impeller within said pumping chamber, and motor means for driving said impeller, said motor means including shaft means for rotatably supporting said impeller in said pumping chamber, said shaft means being hollow and protruding above said pump to provide for the passage of air down through said shaft means for mixing with the water within said pump.
Dependencies are inferred from the claim text.