Patents by Inventor Richard Dale Dennis

Richard Dale Dennis 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 pump operating in the heating mode refrigerant pressure control
    Patent number: 5782101
    Abstract: In a heat pump system operating in the heat cycle mode, a sensor is provided for sensing either the pressure or temperature of a refrigerant. A speed controller receives an output of the sensor so that the speed (including cycle rate) of an evaporator fan is controlled, resulting in control of the pressure or temperature of the refrigerant. The temperature or pressure of the refrigerant is controlled for a heat pump system comprising one refrigeration circuit and more than one refrigeration circuit. A separate speed control is provided for a fixed speed motor, a sleeve bearing fan motor, and a variable speed ball bearing fan motor.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: July 21, 1998
    Assignee: Carrier Corporation
    Inventor: Richard Dale Dennis