Aquarium having improved filtration system
First Claim
1. An aquarium comprising:
- a tank;
a pump disposed in the tank; and
an under gravel filter disposed in the tank below the pump, the under gravel filter including a bubble dispersing base plate and an overlying substrate, the plate being hollow and having a perforated top surface, the pump being connected to the plate such as to pump water into the interior of the plate to thereby cause bubbles to exit upwardly through the perforated top surface of the plate, and the substrate comprising particles having a size, shape and/or density such that particles are easily moved by the bubbles exiting from the perforated top surface of the plate.
1 Assignment
0 Petitions
Accused Products
Abstract
An aquarium which includes a tank having a pump and an under gravel filter disposed in the tank below the pump. The under gravel filter includes a hollow bubble dispersing base plate having a perforated top surface and an overlying substrate. An air conduit is provided for introducing air into the pump. The pump is connected to the plate such as to pump blended oxygenated water and air into the interior of the plate to thereby cause oxygenated water and bubbles to exit upwardly through the perforated top surface of the plate and into and through the substrate. The pump includes a free floating magnetic impeller. A rotational torque generating unit is provided to rotate the impeller. The rotational torque generating unit includes a magnetic drive disk and a motor for rotating the magnetic drive disk. The pump and rotational torque generating unit are aligned with each other such that a magnetic field is established between the magnetic drive disk and the magnetic impeller, the magnetic field rotating upon rotation of the magnetic drive disk to thereby rotate the impeller.
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Citations
28 Claims
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1. An aquarium comprising:
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a tank; a pump disposed in the tank; and an under gravel filter disposed in the tank below the pump, the under gravel filter including a bubble dispersing base plate and an overlying substrate, the plate being hollow and having a perforated top surface, the pump being connected to the plate such as to pump water into the interior of the plate to thereby cause bubbles to exit upwardly through the perforated top surface of the plate, and the substrate comprising particles having a size, shape and/or density such that particles are easily moved by the bubbles exiting from the perforated top surface of the plate.
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2. An aquarium comprising:
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a tank; a pump disposed in the tank; and an under gravel filter disposed in the tank below the pump, the under gravel filter including a bubble dispersing base plate, the plate being hollow and having a perforated top surface, the pump being connected to the plate such as to pump water into the interior of the plate to thereby cause bubbles to exit upwardly through the perforated top surface of the plate, wherein the pump includes a free floating magnetic impeller. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An aquarium comprising:
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a tank; a pump disposed in the tank; and an under gravel filter disposed in the tank below the pump, the under gravel filter including a bubble dispersing base plate and an overlying substrate, the plate being hollow and having a perforated top surface, the pump being connected to the plate such as to pump water into the interior of the plate to thereby cause bubbles to exit upwardly through the perforated top surface of the plates and the substrate comprising particles having a density slightly greater than that of water. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification