Liquid purification or separation – Flow – fluid pressure or material level – responsive – Float
Reexamination Certificate
2011-02-01
2011-02-01
Cecil, Terry K (Department: 1772)
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Float
C210S128000, C210S205000
Reexamination Certificate
active
07879230
ABSTRACT:
A vacuum-actuated liquid chlorine dispenser for use in an aerobic treatment system. Effluent is diverted from a discharge pipe in an aerobic treatment system into an inlet of a venturi chamber. The resulting pressure differential resulting from effluent flowing through the venturi chamber is communicated to a dosage container, which results in disinfectant flow from a reservoir into the dosage container until the volume of disinfectant contained by the dosage container causes a pressure control device, such as a float valve, to inhibit further pressure communication. Thereafter, the accumulated disinfectant within the dosage container egresses through a disinfectant outlet that may include a flow regulation device such as a drip emitter or check valve. The present invention allows for more regular dosing of known and accurate disinfectant amounts following each pumping cycle of the aerobic treatment system.
REFERENCES:
patent: 6627071 (2003-09-01), Braden
patent: 6932912 (2005-08-01), Chaffin
patent: 7837867 (2010-11-01), McKinney
patent: 2006/0196816 (2006-09-01), Davis
patent: 2008/0035539 (2008-02-01), Chaffin
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