External tank filter, in particular for an aquarium
US6764597B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2003 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | May 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/92
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter external to a tank, including a vessel, a lid for closing the vessel, a basket disposed in the vessel for housing filtering components, a top wall bearing sealingly in a central part of the lid allowing communication with the central part, a water-circulating pump disposed in the central part, and means for automatically removing air from a water delivery side, wherein the water is conveyed through the lid by first piping passing through the lid, the water moving down into the vessel on an outside of the basket, entering the basket via a bottom of the basket, passing upward through the basket over the filtering components and leaving the basket at a top of the basket in the central part to be sucked up by the pump and delivered to second piping passing through the lid toward a pipe delivering to the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.