Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1984-08-06
1985-03-26
Tufariello, Thomas
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
B03C 502
Patent
active
045071934
ABSTRACT:
Polar liquids which have been extracted from solution under conditions of a negative pressure environment may be continuously drawn off using a system of holding tanks and control circuitry that overcomes the tendency for the extracted liquid to remain in the subatmospheric environment without risking loss of such environment. A pair of intermediate holding tanks of the system are alternately filled and depleted so that one is filling while the other is discharging to a final point of collection, and the valving arrangements with respect to each holding tank are such that during the time a holding tank is accepting liquid from the extractor, such tank is communicated with the subatmospheric environment associated with the extractor whereby to equalize the pressures between those two systems and enable the liquid to drain freely into the selected holding tank. In order to discharge held liquids from a holding tank, such tank is communicated with the atmosphere after first blocking communication thereof with the subatmospheric extractor.
REFERENCES:
patent: 2116509 (1938-05-01), Cottrell
patent: 3197394 (1965-07-01), McEuen
patent: 3857770 (1974-12-01), Keller
patent: 4233134 (1980-11-01), King
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