Device for filtering a liquid, particularly water
US5643444A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Jan 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/003
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Apparatus for filtering liquids, the apparatus including: a reservoir for the liquid to be purified; a pump operatively associated with the reservoir; a filter having a lower portion and an upper portion and coupled to the pump so that liquid supplied by the pump circulates through the filter from the lower portion to the upper portion; a dispensing member coupled to the filter for dispensing purified liquid; and a one-way valve connected upstream of the filter, with respect to the direction of liquid flow in the apparatus, and operable to maintain the filter in permanent contact with liquid to be purified when the pump is not in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.