Patents by Inventor Douglas H. Mathews

Douglas H. Mathews 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).

  • Heat exchanger with integral subcooler
    Patent number: 5379833
    Abstract: A heat exchanger for a refrigeration circuit for condensing gaseous refrigerant and incorporating an integral refrigerant subcooler. The heat exchanger utilizes an oversized header communicating with the heat exchanger coils of sufficient volume to serve as a reservoir for condensed refrigerant eliminating the need for a separate receiver receptacle. Refrigerant subcooling occurs at the lower region of the receiver whereby the subcooler is automatically provided with liquified refrigerant from the condensing portion of the heat exchanger.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: January 10, 1995
    Assignee: Koolant Koolers, Inc.
    Inventor: Douglas H. Mathews