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US 4,744,895 AGranted
Reverse osmosis water purifier
AssigneeAquasciences International, Inc.
InventorsMichael A. Gales, Stanley I. Magidson, John Wistrand, Donald B. Guy
Life of this patent
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AssigneeAquasciences International, Inc.
InventorsMichael A. Gales, Stanley I. Magidson, John Wistrand, Donald B. Guy
Estimating the term…
A compact reverse-osmosis water purifier especially adapted for use in the household on a counter-top, with an easy-to-operate diverter valve to connect the purifier to a water faucet and sink. A battery-operated pump is provided to dispense water from a storage reservoir. This reduces the size of the purifier unit while maximizing the height from the dispensing spout to the counter-top to accommodate relatively tall vessels for receiving the dispensed water. An automatic conductivity test device causes a red or a green lamp to be lit each time a button is pressed to dispense water, the green lamp indicating that the water is of sufficient purity, and the red lamp indicating that it is not, or that the device is malfunctioning or requires flush cleaning. The diverter valve can be operated to selectively pass water through the faucet in the usual way, or to feed water to the purifier. When in the condition to feed water to the purifier, outlet openings of different diameters can be selected, by operation of a rotary valve, to condition the diverter either for normal operation or for flushing the purifier.
A reverse osmosis water purifier comprising, in combination, a housing having a base adapted to rest upon a countertop, a reverse osmosis water purifier element mounted in said housing, a purified water reservoir mounted in said housing and connected to receive purified water from said purifier element, conduit means for conducting pressurized unpurified water to said purifier element, coupling means for coupling said conduit means to a water faucet outlet as a source of pressurized unpurified water, dispensing outlet means for said reservoir, said outlet means being located a substantial distance above the bottom wall of said reservoir, and pump means operable to pump purified water from said reservoir and out through said outlet.
A countertop reverse osmosis water purifier unit comprising a housing, a purified water reservoir shaped to nest within said housing, a submersible pump for pumping water out of said reservoir, a mounting plate for mounting said pump in said reservoir, said plate forming at least a partial cover over said reservoir.
A reverse osmosis water purifier comprising, in combination, a housing having a base adapted to rest upon a countertop, a reverse osmosis water purifier element mounted in said housing, a purified water reservoir mounted in said housing and connected to receive purified water from said purifier element, conduit means for conducting pressurized unpurified water to said purifier element, coupling means for coupling said conduit means to a water faucet outlet as a source of pressurized unpurified water, dispensing outlet means for said reservoir, said outlet means being located a substantial distance above the bottom wall of said reservoir, electrical pump means operable to pump purified water from said reservoir and out through said outlet, switch means operable for selectively energizing said pump to dispense purified water, and conductivity test means for testing the conductivity of said purified water and indicating whether said conductivity is above or below a pre-determined limit, said test means being operable by said switch means.
A valve for diverting water from a faucet to a reverse osmosis water purifier unit, said valve including a valve body with means for connecting with said valve body with said faucet, said valve body having a feed outlet port for feeding pressurized water to said reverse-osmosis unit, a return inlet port communicating with a drain port in said body, a rotatable valve member rotatably mounted on said valve body, said valve member having orifices of selected sizes, the size of one of said orifices being relatively large for use during flushing of said reverse osmosis unit and the size of another orifice being relatively small and of a size to provide a suitable amount of back pressure for effective operation of said reverse-osmosis unit during water purification, said rotatable valve member being rotatable to align a selected one of said orifices with said drain port.
Dependencies are inferred from the claim text.