Bottom aquarium filter
US4186093A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K63/045
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A bottom aquarium filter for an aquarium tank which includes a container having an inlet compartment which can receive contaminated water from the tank, and a filtration compartment which converts the contaminated water into decontaminated water. The filtration compartment contains a mass of filtering material with a restraining plate positioned in the filtration compartment to restrain the filtering material within one section thereof while maintaining another section substantially free of such filtration material, thereby providing a flow chamber which couples the inlet compartment to the section containing the filtering material. An air diffuser, attached by tubing to an air compressor located outside the aquarium tank, provides a stream of air bubbles to lift water from the decontaminated water compartment through an air lift tube. In this manner, contaminated water from the tank enters into the inlet compartment and from there passes through the flow chamber into the section containing the filtering material where the contaminated water is substantially decontaminated. The water then leaves together with the air through an outlet in the air lift tube and back into the tank. Th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.