Liquid purification or separation – Processes – Separating
Patent
1995-07-24
1997-06-03
Nessler, Cynthia L.
Liquid purification or separation
Processes
Separating
210282, 210266, 210290, 210429, 210436, 210472, C02F 128
Patent
active
056350791
ABSTRACT:
Method for filtering treated water and apparatus to practice the method. The method taught herein consists of filling a first container with water, attaching a special filter apparatus thereto and finally attaching a second, empty bottle to the filter apparatus. When the conjoined containers and filter apparatus are inverted, the water in the first container, now atop the filter apparatus passes through that apparatus and into the second container under the impetus of gravity. Air displaced from the second container by the transfer of water therein is exchanged into the first container by means of a vent located in the body of the filter apparatus. The apparatus taught herein comprises a filter body having disposed within the previously discussed vent, at least one filter element and a check valve to preclude the unwanted re-filtration of previously filtered water. The apparatus further provides for the secure attachment to the two containers for sealing therewith, thereby precluding leakage from the conjoined filter and containers during filtration.
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