Patent · US Expired

Filter for aquarium

US5160607A · kind A · utility

18Cited by

3References

65Claims

0Family size

Assignee

Eheim GmbH & Co. KG · DE

Inventors

Helmut Thiemer · Sachseln, CH
Walter Schottner · Deizisau, DE
Peter Voss · Aromas, US

Key dates

Filing date	Apr 24, 1991
Grant date	Nov 3, 1992
Priority date	—
Expiry date	Apr 24, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W10/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter for aquarium has a housing having a bottom chamber and at least one filter compartment for a filter material located above the bottom chamber, a supply arranged so that water is supplied from above so as to pass the filter compartment and float to the bottom chamber, a pump for pumping water from the bottom chamber back into the aquarium, so that the filter operates as alternating lifting-lowering filter. Each of the filter compartments has at least one overflow aspiration lifting device with an inlet located at a base side and substantially at a height of a bottom of the filter compartment and an outlet which opens downwardly toward a next one of the filter compartments.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.