| 摘要 |
The invention relates to an oxygen supply device intended to be used in an aircraft with four non-return valves (19) each having an inlet orifice linked to a source of oxygen, and an outlet orifice linked to a face mask via a flexible hose (17). The non-return valve (19) associated with each face mask has a removable stem (26) forming part of a collar (27) which surrounds the hose (17) and is attached to a handle part of the hose. When the pin is detached from the non-return valve by lowering the face mask, the oxygen is sent to the mask. <IMAGE>
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