Patents by Inventor Dale Louis Selhost

Dale Louis Selhost has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Oxygen concentrator
    Patent number: 5858062
    Abstract: An apparatus for providing oxygen-enriched air at a first pressure and at a second pressure, the second pressure being greater than the first pressure. The apparatus comprises, in combination, a pressure swing adsorption system and a pressure intensifier. The pressure swing adsorption system for enriching the oxygen content of air has a pressure of at least the first pressure. The pressure swing adsorption system is adapted to provide oxygen-enriched air to a first outlet at the first pressure and to provide oxygen-enriched air to a pressure intensifier at the first pressure. The pressure intensifier pressurizes the oxygen-enriched air and provides the oxygen-enriched air to a second outlet at the second pressure.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: January 12, 1999
    Assignee: Litton Systems, Inc.
    Inventors: Kevin Gene McCulloh, Dale Louis Selhost, John W. Henneman, Kelly M. Coffield