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US 5,495,847 AGranted
Survival hood
OwnerWei Huinventor
Life of this patent
Estimating the term…
Abstract
A survival hood including a hood for the head and neck, which has an inside pocket with at least one upward open space, and a gas generator put in the pocket inside the hood to release oxygen through a chemical reaction for breathing when it is bent inwards to break an inside chemical solution container.
Claims2
A survival hood comprising:
- a transparent, flexible, fire-resisting hood for the head and neck, said hood comprising an opening for putting on the user's head, and at least a pocket on the inside, said pocket having at least one upward outlet at an elevation lower than the user's nose and mouth;
- and
- a gas generator carried in said pocket of said hood for releasing oxygen for breathing, said gas generator comprising a flexible cylindrical shell having a longitudinal series of air outlets, a fragile cylindrical water-tight container longitudinally mounted within said shell at the center, a chemical solution contained in said container, a plurality of linings coaxially mounted within said shell around said container, layers of a solid chemical filled in spaces between said linings, and two end cap means respectively fixed to said shell at two opposite ends to hold two opposite ends of said container for holding by hand to bend said shell and said container in breaking said container, permitting said chemical solution to mix with said solid chemical in releasing oxygen through said air outlet for breathing.
Dependencies are inferred from the claim text.