Oxygen supply unit
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United States of America Patent
Stats
-
Jan 7, 1992
Grant Date -
N/A
app pub date -
Oct 18, 1990
filing date -
Oct 18, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An oxygen supply system for use in an aircraft has four check valves (19) each having an inlet connected to a source of oxygen, and an outlet connected by a flexible hose (17) to a face mask (13). The check valve (19) associated with each face mask has a detachable pin (26) forming part of a collar (27) which embraces the hose (17) and is tethered to a looped section (29) of the hose. When the pin is detached from the check valve, by pulling the face mask down, oxygen is supplied to the mask.
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