Pneumatic shuttle valve for a ventilator system
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United States of America Patent
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Nov 18, 2008
Grant Date -
Dec 14, 2006
app pub date -
Jun 8, 2005
filing date -
Jun 8, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pneumatic shuttle valve for a ventilator is disclosed. The pneumatic shuttle valve selectively connects one of two inlet openings to an outlet opening. The shuttle valve has a plug that is forced by gas pressure entering the second inlet opening, to move to and seal against a first sealing surface, thereby forming a passageway between the second inlet opening and the outlet opening. The plug is forced by gas entering the first inlet opening, to move to and seal against a second sealing surface, thereby forming a passageway between the first inlet opening and the outlet opening.
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