Self closing diaphragm type valve with primary peripheral and secondary central openings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 9, 2002
Grant Date -
N/A
app pub date -
May 15, 2000
filing date -
May 24, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve, shaped and sized for metered dose inhalers, consisting of a mount, a central body and top plate with peripheral air passages and central opening for medication delivery. A flexible elastic diaphragm closes the air passages and a central wiper seal on the diaphragm isolates the center opening from the air passageway. Pressure on the rim of the central opening of the diaphragm causes it to open the air passages timed with injection of medication through the central opening.
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