Dispensing apparatus having improved dynamic range
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United States of America Patent
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Oct 21, 2003
Grant Date -
N/A
app pub date -
Jun 29, 2001
filing date -
Jul 26, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus for dispensing precise quantities of reagents is disclosed including a positive displacement syringe pump in series with a dispenser, such as an aerosol dispenser or solenoid valve dispenser. The pump is controlled by a stepper motor or the like to provide an incremental quantity or continuous flow of reagent to the dispenser. The pump and dispenser are operated in cooperation with one another such that the quantity and/or flow rate of liquid dispensed by the dispenser can be precisely metered substantially independently of the particular operating parameters of said dispenser to attain a desired flow rate, droplet size or mist quality, droplet frequency and/or droplet velocity.
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