Gravity-fed and dual ion-exchange water filtration bottle
US9994459B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Sep 19, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2307/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Systems, devices, and methods of filtering water utilize an integrated gravity-fed, dual ion-exchange filtration bottle. Flow-through multi-stage filtration technology is applied to a personal water bottle. The system filters water from an upper unfiltered water reservoir through a multi-stage filter to a lower filtered water reservoir. A user then drinks from the lower reservoir. The bottle includes a cap with a filtered water outlet through which filtered water in the lower reservoir is accessed with a straw, spout, or other access device. The cap includes an unfiltered water inlet to allow filling and refilling of the upper reservoir without disassembling the bottle. The bottle includes a filter vent that eliminates air locks and partial vacuum that can develop when unfiltered water drains from the upper reservoir through the filter to the lower reservoir. This gravity-fed dual ion-exchange filtration system allows for more complete removal of dissolved solids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.