Method for manufacturing or testing metered-dose-ejection devices and testing apparatus therefore
First Claim
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1. A method of manufacturing metered-dose-ejection-MDE-devices with an affirmed rated ejection dose of fluid upon an ejecting manipulation comprising:
- sealingly connecting the ejection outlet of an unaffirmed MDE device to a test compartment;
machine performing an ejection manipulation upon said MDE device, thereby ejecting a dose of said fluid as a gaseous fluid into said test compartment;
monitoring pressure in said test compartment after having established a predetermined volume of said test compartment;
exploiting said pressure monitored as indication of whether said ejected dose accords within predetermined limits with said predetermined rated ejection dose or not;
if it does, affirming to said receptacle to eject doses according to said predetermined rated dose.
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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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Citations
17 Claims
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1. A method of manufacturing metered-dose-ejection-MDE-devices with an affirmed rated ejection dose of fluid upon an ejecting manipulation comprising:
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sealingly connecting the ejection outlet of an unaffirmed MDE device to a test compartment; machine performing an ejection manipulation upon said MDE device, thereby ejecting a dose of said fluid as a gaseous fluid into said test compartment; monitoring pressure in said test compartment after having established a predetermined volume of said test compartment; exploiting said pressure monitored as indication of whether said ejected dose accords within predetermined limits with said predetermined rated ejection dose or not; if it does, affirming to said receptacle to eject doses according to said predetermined rated dose. - View Dependent Claims (3, 4, 5, 6, 7, 8, 17)
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2. A method of testing metered-dose-ejection—
- MDE—
devices whether they do eject a predetermined, rated ejection dose of fluid upon an ejection manipulation or not, comprising;sealingly connecting the outlet of an MDE device to a test compartment; machine performing a ejection manipulation upon said MDE device, thereby ejecting a dose of said fluid as a gaseous fluid into said test compartment; monitoring pressure in said test compartment after having established a predetermined volume of said test compartment; exploiting said pressure monitored as indication of whether said ejected dose accords within predetermined limits with said predetermined rated ejection dose or not.
- MDE—
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9. Apparatus for testing metered-dose-ejecting—
- MDE—
devices whether they do eject a predetermined rated ejection dose of fluid upon an ejection manipulation or not, comprising;a support for at least one MDE device; a driven manipulator for causing said MDE device on said support to eject a dose of fluid from an ejection outlet; a driven connector arrangement to be automatically and sealingly applied to said ejection outlet and establishing flow communication with a test compartment cavity; a pressure sensor with its sense input in flow communication with said test compartment cavity. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
- MDE—
Specification