Hyperbaric oxygen chamber, method, and door assembly therefor

A hyperbaric oxygen chamber, comprising:

• two pressure vessel heads having a cylindrical lip;
• a cylindrical wall connecting said heads, said wall secured to the interior of said lips to reinforce said wall;
• two segmental plates bent along their straight edges to form a flange, each of said plates secured to the interior surface of one of said lips, said bends giving added rigidity to said plates, said plates and said wall comprising an entry to said chamber;
• a sealing surface around the inside periphery of said entry;
• and
• an inwardly opening door that seals against said surface, said chamber is pressurized with air to a level of two atmospheres and including means for delivering pure oxygen to a patient within said chamber, said chamber fitting through a single door opening in a direction perpendicular to the axis of said wall, said chamber also comprising:
• a guide rod;
• two supports supporting the ends of said guide rod secured to said wall;
• a first bracket secured to the interior surface of said door, and having a portion which extends horizontally outward from said door;
• a second bracket, pivotably secured against said horizontally extending portion of said first bracket, having a portion which extends downward and is slideably mounted on said guide rod;
• a track extending along said entry;
• and
• a guide secured to said door for sliding within said track.