Ambient air breathing device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 16, 2003
Grant Date -
Mar 6, 2003
app pub date -
Jun 13, 2001
filing date -
Jun 13, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatically closing ambient air device is disclosed having a generally conical passageway, containing an inlet for the flow of fluid from the ambient environment into the passageway and an outlet for the flow of such fluid from the passageway, and having valve means arranged to close fluid flow through the outlet from the passageway which is actuated by buoyant force and/or gravitational force and/or a combination thereof imposed by a weighted element in response to the spacial orientation of the conical wall of the passageway to level.
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Family
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Cited Art Landscape
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