Aquarium filter
US5514280A · kind A · utility
Inventor
Key dates
| Filing date | Nov 15, 1994 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Nov 15, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K63/045
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A filter system is provided for mounting on an aquarium tank to treat the water in the aquarium. The filter system comprises a plurality of filter chambers, each containing a different filter media. The filter chambers serve to filter particulate matter from the aquarium water. A heater is further provided for controlling and maintaining the temperature of the aquarium water. The filter system further includes a dry chamber including a biological medium to support the growth of beneficial bacteria on the medium. A particularly preferred type of media is a plurality of plastic biospheres. The beneficial bacteria serve to biologically treat the aquarium and eliminate ammonia and nitrites from the water. At least one buffering chamber including a buffering medium is provided for buffering the aquarium water and maintaining a predetermined alkalinity level for the water. An air pump serves to pressurize portions of said filter system and aerate the aquarium water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.