Liquid purification or separation – Flow – fluid pressure or material level – responsive
Patent
1990-03-15
1991-03-05
Sever, Frank
Liquid purification or separation
Flow, fluid pressure or material level, responsive
2102572, 21032165, B01D 6108, B01D 6112
Patent
active
049975536
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).
REFERENCES:
patent: 4834873 (1989-05-01), Burrows
patent: 4909934 (1990-03-01), Brown et al.
Clack Corporation
Sever Frank
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