Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2008-09-25
2009-12-29
Savage, Matthew O (Department: 1797)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S758000
Reexamination Certificate
active
07638063
ABSTRACT:
Contaminants are removed from fluid in a system where the fluid is sprayed into an air head at the top of a tank through a diffuser and withdrawn through a pick-up tube. A solenoid valve operates to allow oxygen-containing gas from a compressed gas source to flow into the tank through a shuttle valve, which is opened by the gas pressure. Simultaneously, a drain valve connected to the shuttle valve opens a drain, venting water and air from the tank. The solenoid valve also operates to close the gas supply line and connect the shuttle valve through a vent to atmosphere. Pressure within the tank closes the shuttle valve, which in turn closes the drain valve and disconnects the shuttle valve from the tank. A one-way-flow valve prevents fluid or gas from flowing from the tank backwards through the shuttle valve to the solenoid valve and out the vent.
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Beres Paul A.
Hellenbrand Kevin A.
Kavey William M.
Klein Daniel A.
Maas Edward T.
Hellenbrand, Inc.
Lathrop & Clark LLP
Savage Matthew O
Stelling Lucas
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