Method for manufacturing or testing metered-dose-ejection devices and testing apparatus therefore
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United States of America Patent
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Dec 25, 2012
Grant Date -
Feb 16, 2012
app pub date -
Apr 29, 2009
filing date -
Apr 29, 2009
priority date (Note) -
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Abstract
For testing metered-dose-ejection devices, whether the ejected dose accords with a rated dose, the device (1) is sealingly applied (26) to a test compartment (24) and upon machine manipulation on the device (M, 5) a dose is ejected into the test compartment (24). Pressure difference established by such injection and with respect to a pre-established reference pressure (30) in the test compartment (24) is monitored by a pressure sensor (32). The output signal (o) of this sensor (32) is indicative of the extent of the addressed dose.
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