Dual impeller pump
First Claim
Patent Images
1. A pump for use with an aquarium filter, comprising:
- an impeller housing, the impeller housing defining first and second inlets and first and second outlets,an axis,first impeller blades associated with the first inlet and the first outlet, the first impeller blades being revolvable about the axis,second impeller blades associated with the second inlet and the second outlet, the second impeller blades being revolvable about the axis,an impeller disc interposed between, and coupled to, said first impeller blades and said second impeller blades, said impeller disc being revolvable about the axis along with said first and second impeller blades, anda motor having a rotor for driving the first and second impeller blades and the impeller disc, the rotor being rotatably mounted on the axis.
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Accused Products
Abstract
An improved aquarium pump for use with an aquarium filter which includes a filter box, a rotating biological filter element and a spray bar, the pump supplying water to the rotating biological filter element and the spray bar. The pump may include a pair of impellers for supplying water to the filter box and the spray bar, respectively.
50 Citations
38 Claims
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1. A pump for use with an aquarium filter, comprising:
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an impeller housing, the impeller housing defining first and second inlets and first and second outlets, an axis, first impeller blades associated with the first inlet and the first outlet, the first impeller blades being revolvable about the axis, second impeller blades associated with the second inlet and the second outlet, the second impeller blades being revolvable about the axis, an impeller disc interposed between, and coupled to, said first impeller blades and said second impeller blades, said impeller disc being revolvable about the axis along with said first and second impeller blades, and a motor having a rotor for driving the first and second impeller blades and the impeller disc, the rotor being rotatably mounted on the axis. - View Dependent Claims (2)
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3. An aquarium, comprising:
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a containment vessel having a plurality of walls for containing aquarium water; a filter mounted adjacent one of the walls of the containment vessel, the filter including a filter box, a rotatable filter element and a spray bar for supplying water to the rotatable filter element; and a pump disposed substantially within the filter, the pump including an impeller housing defining first and second flow paths, impeller means, mounted substantially within the impeller housing, for propelling water through the first flow path to the filter box and through the second flow path to the spray bar, and drive means for rotating the impeller means. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of filtering aquarium water, comprising:
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driving a first impeller with a rotor to impel unfiltered water at a first flow rate from the aquarium through a filter box and past a biological filter to filter the water; discharging a portion of the filtered water back into the aquarium; driving a second impeller with the same rotor, to impel a portion of the water from the filter box at a second and lower flow rate to a spray bar; and spraying water from the spray bar at the biological filter to rotate the biological filter.
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19. A water filter comprising:
- a filter box, a rotatable filter element mounted for filtering water flowing from said filter box, a spray bar for supplying water to said rotatable filter element, and a pump, said pump comprising;
an impeller housing defining first and second flow paths coupled to the filter box and spray bar, respectively, impeller means, mounted substantially within the impeller housing, for propelling water through the first and second flow paths and drive means for rotating the impeller means. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
- a filter box, a rotatable filter element mounted for filtering water flowing from said filter box, a spray bar for supplying water to said rotatable filter element, and a pump, said pump comprising;
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30. A water filter comprising:
- a filter box, first and second rotatable filter elements mounted for filtering water flowing from said filter box, first and second spray bars for respectively supplying water to said first and second rotatable filter elements, and a pump, said pump comprising;
an impeller housing defining first and second flow paths, the second flow path including first and second branches, impeller means, mounted substantially within the impeller housing, for propelling water through the first flow path to the filter box and through the first and second branches of the second flow path to the first and second spray bars, respectively, and drive means for rotating the impeller means. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
- a filter box, first and second rotatable filter elements mounted for filtering water flowing from said filter box, first and second spray bars for respectively supplying water to said first and second rotatable filter elements, and a pump, said pump comprising;
Specification