Patents by Inventor Douglas H. Morse

Douglas H. Morse 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).

  • Refrigeration system pressure control using a gas volume
    Patent number: 6530237
    Abstract: An apparatus and method are provided for controlling a system pressure in a refrigeration system based on a variable load, which includes sensing return pressure and high side pressure in the system, and adjusting the low pressure to optimize a gas flow rate in the system by adding or removing gas from the system through an operating range of pressures in response to the sensed return pressure and the sensed high side pressure. The method further includes calculating a pressure difference between the return pressure and the high side pressure. A second pressure difference is calculated, and if the pressure difference decreases, gas is added to system and if the pressure difference increases, gas is removed from the system.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: March 11, 2003
    Assignee: Helix Technology Corporation
    Inventors: Douglas H. Morse, James A. O'Neil
  • Refrigeration system pressure control using a gas volume
    Publication number: 20020139129
    Abstract: An apparatus and method are provided for controlling a system pressure in a refrigeration system based on a variable load, which includes sensing return pressure and high side pressure in the system, and adjusting the low pressure to optimize a gas flow rate in the system by adding or removing gas from the system through an operating range of pressures in response to the sensed return pressure and the sensed high side pressure. The method further includes calculating a pressure difference between the return pressure and the high side pressure. A second pressure difference is calculated, and if the pressure difference decreases, gas is added to system and if the pressure difference increases, gas is removed from the system.
    Type: Application
    Filed: April 2, 2001
    Publication date: October 3, 2002
    Applicant: Helix Technology Corporation
    Inventors: Douglas H. Morse, James A. O'Neil