Oxygen delivery system

  • US 7,204,247 B1
  • Filed: 02/28/2006
  • Issued: 04/17/2007
  • Est. Priority Date: 11/15/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A portable gas delivery system, comprising:

  • a regulator having a mixing chamber and an accumulator chamber therein, the accumulator chamber being at least 0.2 cubic inches in volume;

    a cartridge attachable to the regulator, the cartridge containing a gas and configured to deliver the gas to the accumulator chamber at a flow rate of at least about 1.5 liters per minute, the mixing chamber in gaseous communication with the accumulator chamber and configured to form a gaseous mixture with the gas from the accumulator chamber by mixing in an ambient air;

    means for filling the accumulator chamber with the gas; and

    an outlet in communication with the mixing chamber, the outlet being configured to deliver the gaseous mixture from the mixing chamber.

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