Pressure relief valve for an inhalator
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United States of America Patent
Stats
-
Jan 28, 2003
Grant Date -
Oct 31, 2002
app pub date -
Jul 12, 2001
filing date -
Dec 17, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gas ejection valve includes a valve casing including first and second blocks that cooperate to define a holder groove and have a first mating face formed with an annular space, an inner peripheral seal ring disposed on the inner periphery of the valve casing to be in close contact with the outer periphery of a valve pin and being received in the holder groove, and an auxiliary seal ring received in the annular space for preventing communication between the inside of the gas container and the holder groove.
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