Breathing mask and regulator for aircraft

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure

Reexamination Certificate

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Details

C137S081100, C137S907000, C137S908000, C251S083000

Reexamination Certificate

active

07836886

ABSTRACT:
The auxiliary breathing flow channel apparatus for an oxygen mask for pilots and crew of an airplane includes a flow control device with closed and open positions to regulate flow through an auxiliary channel. A pressure sensor such as an aneroid capsule automatically closes the auxiliary channel upon a decrease in cabin pressure. A handle also allows a user to manually move the flow regulating means to a closed position.

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patent: 2004/0261794 (2004-12-01), Patterson et al.
patent: 2006/0037653 (2006-02-01), Moreno
patent: 2007/0006881 (2007-01-01), Hsieh
patent: 775911 (1957-05-01), None

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