Precision liquid dispensing system
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United States of America Patent
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Aug 12, 2008
Grant Date -
Jan 22, 2004
app pub date -
Jan 17, 2003
filing date -
Jan 24, 2002
priority date (Note) -
In Force
status (Latency 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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