Patents by Inventor Wayne R. Berry

Wayne R. Berry 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).

  • Scroll machine with liquid injection
    Patent number: 6615598
    Abstract: A refrigeration circuit includes a scroll compressor, a condenser and an evaporator connected in a closed loop. A liquid injection system takes liquid refrigerant from the refrigerant circuit and injects it into a suction line leading to the compressor to cool the refrigerant in the refrigeration circuit. An electronic control unit operates a controllable valve based on a temperature reading received from a discharge gas temperature sensor. The controllable valve can be an electronic expansion valve or a solenoid valve.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: September 9, 2003
    Assignee: Copeland Corporation
    Inventors: Simon Y. Wang, Wayne R. Berry