Zero waste reverse osmosis water filtering
US7285210B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 2004 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Oct 18, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/441
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reverse osmosis water filtering system includes a reverse osmosis membrane having first output port for permeate water, second output port for concentrate water, and intake port for receiving filtered water, a filtering assembly providing filtered water to the membrane, and a flow restrictor restricting a flow of concentrate water from the membrane to a water source, the flow restrictor including a housing defining an elongated conduit having a tapering conical wall defining a first screw thread and a water-channel thread extending therealong including generally between a first opening into a distal region of the conduit for receiving a flow of liquid and a second opening into a proximal region of the conduit, and an axially elongated plug received into the conduit, a surface of the plug opposed to the tapering conical wall defining a second screw thread and a tapering surface, the second screw thread disposed in threaded engagement with the first screw thread defined by the conical wall of the housing, opposed surface of the water-channel thread and the tapering surface of the plug being disposed in sealing engagement within the conduit and opposite to define a region for liquid…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.