Water filter cartridge
US4814078A · kind A · utility
37Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Sep 15, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2307/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cartridge for a water filter system has a closed housing with only an inlet and an outlet formed in the lower surface thereof. A discharge tube extends from the outlet at the bottom, through the housing, to a position near the top of the housing. There, an elongated sleeve of filter material filters the water leaving the housing. The space between the inlet and the filter sleeve is filled with three different filter materials, most of which is activated charcoal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.