Water purifier apparatus
US4172796A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1976 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Jun 1, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86871
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A water purification device includes a housing having a base portion and a generally-cylindrical cup-shaped cap removably secured thereto. An input fluid channel in the base portion communicates with one end of the chamber defined by the cup and an outlet fluid channel communicates with that chamber end. A filter cartridge disposed within the cap has a conduit that extends between its opposite end walls. Filter material surrounds the conduit. An inlet opening in the cartridge is positioned to communicate with the input fluid channel so as to permit water to flow through the filter material. An outlet opening in the cartridge is arranged to communicate from the filter material to the other end of the aforementioned conduit remote from said outlet channel. The conduit other end is positioned to communicate to the outlet channel. A valve is included in an extension of the base portion in order selectively to control the distribution of water as between an outlet passage and the inlet channel. The valve itself has a bore and corresponding stem which are longitudinally tapered, a recess cut longitudinally into the stem for permitting fluid to flow from an inlet port outwardly from one e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.