Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator

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United States of America Patent

PATENT NO RE43398
SERIAL NO

11366986

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Abstract

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The present invention is directed to a much safer and less expensive way of providing portable oxygen from a gas concentrator for patients who do not want to be tied to a stationary machine or restricted by present oxygen technology. The present invention involves a home liquid oxygen ambulatory system for supplying a portable supply of oxygen, where a portion of the gaseous oxygen output obtained from an oxygen concentrator is condensed into liquid oxygen. The system includes an oxygen concentrator which separates oxygen gas from the ambient air, a condenser in communication with the oxygen concentrator for receiving and liquefying the oxygen gas flow, a cryocooler associated with the condenser, and a first storage dewar in fluid communication with the condenser and adapted to store the oxygen liquefied by the condenser, the first storage dewar including means for transferring liquid oxygen from the first dewar to a second dewar for storing a quantity of oxygen suitable for moveable oxygen treatment.

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Patent Owner(s)

Patent OwnerAddress
RESPIRONICS INCMURRYSVILLE PA 15668-8525

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hill, Charles C San Diego, US 41 1909
Hill, Theodore B San Diego, US 35 2130
Honkonen, Scott C Tucson, US 5 471
Walker, Graham Nanaimo, CA 38 568

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