Loose powder inhaler with inhalation-actuated dosing piston
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 31, 1993
Grant Date -
N/A
app pub date -
Jun 1, 1992
filing date -
May 30, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An inhaler for powder products comprising a housing having an oral suction mouthpiece, a piston contained within the housing for movement in opposite directions, and an elastic member for urging the piston in one direction. The mouthpiece connects with a chamber in which the piston is located so that inhaling through the mouthpiece draws the piston toward the user's mouth. The piston includes a charging cavity for holding a charge of powder product. The cavity communicates with the internal volume of the mouthpiece as the piston is drawn toward the user's mouth whereby the charge is dispensed and inhaled by the user.
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Family
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