Fresh water generator and fresh water generating method
Patent 6334955 Issued on January 1, 2002. Estimated Expiration Date: 
October 20, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 20, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3498910 3639231 3707231 3716141 T921001 3856676 Simultaneous production of multiple grades of purified water by reverse osmosis Water purifier system and valve Flushing system for reverse osmosis water purification units Reverse osmosis water purifier InventorsAssigneeApplicationNo. 421998 filed on 10/20/1999US Classes:210/636, Including cleaning or sterilizing of apparatus210/321.69, With membrane cleaning or sterlizing means (other than by filter movement or rotating agitator)210/637, Including regulating pressure to control constituent gradient at membrane or to prevent rupture of membrane210/652, Hyperfiltration (e.g., reverse osmosis, etc.)210/669Prior to ion exchange or sorptionExaminersPrimary: Drodge, Joseph W.Attorney, Agent or FirmForeign Patent References
International ClassB01D 065/02Foreign Application Priority Data1998-10-20 JPAbstractA wash water pipe having a flushing valve inserted therein is connected with a concentrated water outlet pipe connected to a concentrated water outlet of a fresh water generating cartridge. A timer controls opening and closing of the flushing valve. The flushing valve is periodically opened during interruption of fresh water generation work with the fresh water generating cartridge or during fresh water generation work, or opened simultaneously with interruption of fresh water generation work or when restarting fresh water generation work, for performing flushing. Thus, the linear velocity on the surface of a reverse osmosis membrane of the fresh water generating cartridge is increased and impurities remaining on the membrane surface are discharged from the fresh water generating cartridge.Field of SearchWITH TIME CONTROLHaving membrane Backwash or blowback With membrane cleaning or sterlizing means (other than by filter movement or rotating agitator) Diverse Including cleaning or sterilizing of apparatus Hyperfiltration (e.g., reverse osmosis, etc.) Prior to ion exchange or sorption Maintaining stream pressure or flow Of additional fluid Permeated liquid quantity measurement or control Including regulating pressure to control constituent gradient at membrane or to prevent rupture of membrane Removing specified material | |
