Powder inhaler with frusto-conical metering surface having dose indentations
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United States of America Patent
Stats
-
Aug 19, 1997
Issued Date -
N/A
app pub date -
Feb 3, 1995
filing date -
Jul 13, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The inhaler includes a storage chamber for the powder to be delivered and an inhalation passage through which air is drawn via a mouth piece. A metering member having a frustoconical side wall presents each dose to the inhalation passage in an upwardly open metering cup to be drawn therefrom by the air flow through the passage. A wiping element removes any particles of powder from the dispensing cup as it travels from the inhalation passage to the storage chamber to be refilled, and a chamber containing a moisture-absorbent material dries the empty cup and also dries the powder in the cup prior to inhalation to aid its removal from the cup. A mechanical counter is indexed each time the metering member is indexed to display the number of doses used or remaining.
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Family
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Cited Art Landscape
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