Chemistry: physical processes – Physical processes – Crystallization
Patent
1974-02-19
1976-05-11
Scovronek, Joseph
Chemistry: physical processes
Physical processes
Crystallization
1281423, 128203, A61M 1500, A61M 1600, A62B 708, B01J 700
Patent
active
039559319
ABSTRACT:
Exothermic reacting chemical oxygen generators are heat insulated with a hydrate to protect the user. The hydrate, when heated by the generator releases water which is vaporized and allowed to escape to a zone which will not be grasped by the user or is absorbed in a surrounding inert insulation layer where it can condense and revaporize as the heat wave passes through the surrounding inert insulation. The generator is preferably in the form of a disposable canister such as a tin can containing an oxygen generating chlorate candle and means for igniting the candle. A mask or cannula carrying cap is snapped on the can and has mechanism for piercing the can and activating the ignition means to flow oxygen to the mask or cannula.
The preferred insulation includes a hydrate salt layer sandwiched between metal foil-backed refractory fiber blankets and covered with a sleeve.
REFERENCES:
patent: 2392199 (1946-01-01), Steiger
patent: 2558756 (1951-07-01), Jackson et al.
patent: 3536070 (1970-10-01), Bovard
patent: 3580250 (1971-05-01), Oroza
patent: 3620683 (1971-11-01), Hwoschwsky et al.
patent: 3736104 (1973-05-01), Churchill et al.
patent: 3737287 (1973-06-01), Churchill et al.
patent: 3742683 (1973-07-01), Sebest et al.
patent: 3767366 (1973-10-01), Staub
Garris Bradley R.
Life Support, Inc.
Scovronek Joseph
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