Patent ID: 7204249

Claim:
An apparatus for compressing and storing an oxygen-enriched gas, comprising: a concentrated oxygen source having oxygen-enriched gas therein, wherein said oxygen enriched gas contains at least about 50% oxygen by volume; a radial piston compressor operatively connected to said oxygen source to receive the at least 50% oxygen by volume gas therefrom, said radial compressor being capable of compressing said oxygen-enriched gas to a high pressure; and a high-pressure storage container for portable storage of said high-pressure oxygen-enriched gas; wherein said oxygen-enriched gas is prioritized by a portion thereof being capable of being fed to a person and a portion thereof being capable of being fed to said radial compressor, said prioritization includes a determination of a minimum oxygen concentration of said oxygen enriched gas by an oxygen sensor and the operation of said radial compressor being terminated when said enriched oxygen gas is below a predetermined oxygen level.