Water purifier
US4277332A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1980 |
| Grant date | Jul 7, 1981 |
| Priority date | — |
| Expiry date | Mar 10, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2201/006
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water purifier having its principal utility in medical, biological and chemical laboratories comprising a housing having a water inlet and three water outlets and containing a charcoal layer which strips the water of absorbed and non-ionized dissolved impurities, and an ion-exchange resin layer which strips the water of ionized dissolved impurities, and a submicron pore size filter membrane which strips the water of bacteria and other solid impurities, two of the three water outlets being for withdrawing water from the housing after it has passed through the aforesaid layers and the membrane, and the third of the three water outlets being for withdrawing water from the housing after it has passed through the aforesaid layers not through the membrane. The purifier further includes a water reservoir and a pump for pumping water from the reservoir through the inlet opening into the housing, the water from the third outlet opening and from one of the other two outlet openings being cycled back to the reservoir for recycling through the housing until the ionized impurity content of the water has been reduced to the extent desired, there being means for measuring such impurity in the w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.