Precision liquid dispensing system
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United States of America Patent
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Apr 17, 2012
Grant Date -
Jan 8, 2009
app pub date -
Jul 8, 2008
filing date -
Jan 24, 2002
priority date (Note) -
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Abstract
A system for dispensing microdrops of reagent in small, precisely metered quantities maintains the fluid reagent to be dispensed in a reservoir under a controlled pressure. The reagent is dispensed through multiple nozzles connected to solenoid-actuated valves that control the flow of the reagent from the reservoir to the nozzles. Each valve is connected to one of the nozzles and electrical pulses are supplied separately to each of the valves to separately control the opening and closing of each valve to dispense predetermined quantities of the reagent through each nozzle at predetermined times.
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