초록 ▼

An improved oral/nasal mask-hood is provided for protection of individuals in the event of fire or smoke exposure. When attached to a supplemental supply of oxygen the mask-hood also provides hypoxia protection to individuals exposed to decompression as in some aircraft incidents. The mask-hood empl

An improved oral/nasal mask-hood is provided for protection of individuals in the event of fire or smoke exposure. When attached to a supplemental supply of oxygen the mask-hood also provides hypoxia protection to individuals exposed to decompression as in some aircraft incidents. The mask-hood employs a five stage filtering process for converting toxic atmospheric air to breathable fresh air. The hood covers the wearer's head, neck and shoulder area. A neck seal is provided inside the hood for preventing gases from locating within the hood and irritating the wearer's eyes. A transparent member is located on the hood adjacent the wearer's line of sight to provide visibility during the emergency. The hood-mask device, as assembled, is small enough to retrofit into the space provided for the present decompression mask alone.

대표청구항 ▼

1. A device for protection to a user, from heat, noxious and/or toxic gases during hypoxic and fire emergencies, the device usable alone or the device usable in conjunction with a breathable oxygen source comprising:an exclusively dry multi-stage filtering means for converting atmospheric gases into

1. A device for protection to a user, from heat, noxious and/or toxic gases during hypoxic and fire emergencies, the device usable alone or the device usable in conjunction with a breathable oxygen source comprising:an exclusively dry multi-stage filtering means for converting atmospheric gases into breathable air; a mask having a first and second mask aperture, said mask constructed and arranged to conform to the contours of a user's mouth and nose region, said mask connected to said means for converting at said first mask aperture, said mask having an exhalation valve; means for retaining said mask tightly on a user's mouth and nose regions at said second mask aperture, said means for retaining connected to said mask; wherein said device provides protection to a user, from heat, noxious and/or toxic gases which might be present during hypoxic and fire emergencies; a hood constructed of a non-flammable, gas impermeable material, said hood covering a user's head and neck area, said hood having an interior surface and an exterior surface, said means for converting attached to said hood; means for viewing during hypoxic and fire emergencies attached to said hood and disposed substantially in front of a user's eyes; means for preventing fogging of said means for viewing during exhalation by said user, said means for preventing fogging disposed on said hood and is adjacent said exhalation valve when said hood is properly deployed; and means for preventing said atmospheric air from locating within said hood, said means for preventing attached to said interior surface of said hood.