Aspirator pump and metering device
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United States of America Patent
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-
Jan 6, 1987
Issued Date -
N/A
app pub date -
Jul 8, 1985
filing date -
Feb 29, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus is disclosed for controlling flow rates of a primary fluid including aspirating, mixing, and metering the primary fluid with a secondary fluid. In one aspect, the invention includes means for passing a secondary fluid of diluent gas through a venturi having specified proportions including discharge coefficient; and means for pumping primary fluid through venturi suction to pass through a primary fluid orifice of specified discharge coefficient wherein the venturi discharge coefficients of the venturi and the liquid orifice form a substantially linear proportionality over a wide range of flow rates through the venturi.
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