Patents by Inventor Milburn E. Dupre

Milburn E. Dupre 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).

  • Energy conserving compressor refrigeration apparatus
    Patent number: 4781032
    Abstract: An energy-conserving refrigeration apparatus which employs a atmospheric pressure and vacuum-pressure actuated partial compressor for a refrigerant gas in combination with a conventional prime mover-driven compressor and also achieves lower compressor head pressure and increased condenser cooling of the refrigerant gas.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: November 1, 1988
    Inventor: Milburn E. Dupre
  • Energy conserving refrigeration valve control apparatus
    Patent number: 4751824
    Abstract: An energy-conserving refrigeration apparatus which employs a atmospheric pressure and vacuum-pressure actuated partial compressor for a refrigerant gas in combination with a conventional prime mover-driven compressor and also achieves lower compressor head pressure and increased condenser cooling of the refrigerant gas.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: June 21, 1988
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Milburn E. Dupre
  • Energy conserving refrigeration apparatus and method
    Patent number: 4679986
    Abstract: An energy-conserving refrigeration apparatus which employs a atmospheric pressure and vacuum-pressure actuated partial compressor for a refrigerant gas in combination with a conventional prime mover-driven compressor and also achieves lower compressor head pressure and increased condenser cooling of the refrigerant gas.
    Type: Grant
    Filed: November 20, 1984
    Date of Patent: July 14, 1987
    Inventor: Milburn E. Dupre