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US 9,956,440 B2Granted
Oxygen supply with carbon dioxide scrubber for emergency use
OwnerBertil R. L. Werjefeltinventor
Life of this patent
Estimating the term…
Abstract
An oxygen supply system for a station operator includes an oxygen cylinder; a mask operably connected to the oxygen cylinder; a pouch operably connected to the mask; carbon dioxide scrubber disposed inside the pouch; first one-way valve operably connected between the mask and the pouch for allowing one-way flow of gases exhaled by the operator from the mask to the pouch; and second one-way valve operably connected between the mask and the pouch for allowing one-way flow of gases from the pouch to the operator.
Claims19
An oxygen supply system for a station operator, comprising:
- a) an oxygen cylinder;
- b) a mask directly connected to the oxygen cylinder to allow the station operator to inhale oxygen directly from the oxygen cylinder;
- c) a pouch operably connected to the mask, the pouch is inflatable during use and deflatable for storage;
- d) carbon dioxide scrubber disposed inside the pouch;
- e) first one-way valve operably connected between the mask and the pouch for allowing one-way flow of gases exhaled by the station operator from the mask to the pouch;
- and
- f) a second one-way valve operably connected between the mask and the pouch for allowing one-way flow of gases from the pouch to the mask, the second one-way valve is controllable by the station operator to be selectively closed to the one-way flow of gases from the pouch to the mask during inhalation to allow the gases exhaled by the station operator to accumulate inside the pouch.
4 more elements
An oxygen mask, comprising:
- a) a cup for sealing attachment over a user's mouth and nose, the cup is configured for direct connection to an oxygen supply to allow the user to inhale oxygen directly from the oxygen supply;
- b) a pouch operably connected to the cup, the pouch is inflatable during use and deflatable for storage;
- c) carbon dioxide scrubber disposed inside the pouch;
- d) a first one-way valve operably connected between the cup and the pouch for allowing one-way flow of gases exhaled by the user to the pouch;
- and
- e) a second one-way valve operably connected between the cup and the pouch for allowing one-way flow of gases from the pouch to the cup, the second one-way valve is controllable by the user to be selectively closed to the one-way flow of gases from the pouch to the cup during inhalation to allow the gases exhaled by the user to accumulate inside the pouch.
3 more elements
Dependencies are inferred from the claim text.