Storage and dispensing apparatus for reverse osmosis filtration purification system
US4997553A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1990 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D61/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A new and improved reverse osmosis (R.O.) water filtration purification apparatus is described including a three-way faucet and a low cost blow molded storage tank. The storage tank includes a bladder which defines an outer drive fluid chamber and an inner purified water chamber for expandably receiving and storing purified water from an R.O. filter purification subassembly. The three-way faucet includes an actuator for simultaneously opening a pair of mechanical valves within the faucet. Simultaneously opening the faucet valves causes incoming tap water at line pressure to enter the drive fluid chamber of the tank which dispenses purified R.O. water from the purified water chamber at line pressure from the faucet. In accordance with the arrangement, a buildup of pressure on the storage tank is avoided so that a less expensive blow molded storage tank container may be employed to significantly reduce the overall cost of the apparatus. In a preferred embodiment, the storage tank is blow molded polypropylene or injection blow molded polyethylene terephthalate (PET).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.