Liquid oxygen production
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United States of America Patent
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-
Apr 10, 2001
Grant Date -
N/A
app pub date -
Nov 1, 1999
filing date -
Nov 1, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for liquefying and storing a gas is provided. The apparatus is adapted to liquify relatively small quantities of gas, and to do so in a residence or place of business. The apparatus generally includes a cryocooler, a heat transfer assembly, and an insulated subsystem. Liquid condensate produced by the apparatus is stored in an insulated dewar. The method of the present invention includes the liquification of air or an enriched gas on a small scale in a residence or place of business. The method and apparatus of the invention are particularly well suited for providing liquified oxygen for use by a patient on oxygen therapy in the patient's residence.
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