Patent ID: 7381377

Claim:
A method for producing a breathable oxygen stream from a portable apparatus, the method comprising: providing a first predetermined amount of water in a first upper containment chamber containing a first water seal, providing a first predetermined amount of oxygen releasing powder in a first oxygen releasing powder chamber positioned below the first water containment chamber, providing a first predetermined amount of catalyst in a first catalyst chamber positioned below the first water containment chamber and including a first catalyst seal, puncturing the first water seal to release the first predetermined amount of water from the first upper chamber into the first oxygen releasing powder chamber, puncturing the first catalyst seal to release the first predetermined amount of catalyst into the oxygen releasing powder chamber, generating a first oxygen flow in the oxygen releasing powder chamber from the releasing of the water and catalyst into the first oxygen releasing powder chamber, directing the first oxygen flow through a first foam breaker positioned in the first upper chamber, directing the first oxygen flow through a first filter positioned in the first upper chamber, providing a second predetermined amount of water in a second upper containment chamber containing a second water seal, providing a second predetermined amount of oxygen releasing powder in a second oxygen releasing powder chamber positioned below the second water containment chamber, providing a second predetermined amount of catalyst in a second catalyst chamber positioned below the second water containment chamber and including a second catalyst seal, puncturing the second water seal to release the second predetermined amount of water from the second upper chamber into the second oxygen releasing powder chamber, puncturing the second catalyst seal to release the second predetermined amount of catalyst into the oxygen releasing powder chamber, generating a second oxygen flow in the oxygen releasing powder chamber from the releasing of the water and catalyst into the second oxygen releasing powder chamber, directing the second oxygen flow through a second foam breaker positioned in the second upper chamber, directing the second oxygen flow through a second filter positioned in the second upper chamber, combining the first and second oxygen flows in a manifold, directing the first and second oxygen flows into a heat transmission pathway fluidly coupled to the manifold, the heat transmission pathway comprising a first curved tubular member, transferring heat from the first and second oxygen flows to a heat sink thermally coupled to the tubular member, and directing the first and second oxygen flows into a bubbler chamber fluidly coupled to the heat transmission pathway.