Pyramidic aquarium filter-aerator
US4206054A · kind A · utility
51Cited by
14References
9Claims
0Family size
Inventors
Key dates
| Filing date | Oct 27, 1978 |
| Grant date | Jun 3, 1980 |
| Priority date | — |
| Expiry date | Oct 27, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K63/045
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An aquarium filter-aerator device having a substantially pyramidic construction with water inlets on all sides that operates on an air-induced water flow principle anywhere along the bottom of an aquarium. The filter-aerator has an inner construction that defines a pre-filter chamber which accumulates impurities and a post-filter chamber for aerating the purified aquarium water. The particular construction and disposition of the filter-aerator facilitates the forming of a plurality of directional water currents to sweep aquarium impurities into the filter-aerator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.