Patents by Inventor Nathan D. Wright

Nathan D. Wright 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).

  • Method and apparatus for controlling supplemental heat in a heat pump system
    Patent number: 6149066
    Abstract: A method and apparatus for controlling supplemental heat added to the air stream passing from an indoor coil to an air supply duct of a heat pump system, the heat pump system being of the type that includes an indoor thermostat having a first set point for initiating heat supplied by the indoor coil and a second set point for initiating additional heat supplied by supplemental heating means. The supplemental heating elements include an adjustable output heating element for heating air passing from the indoor coil to the air supply duct. The coil discharge temperature of the air stream heated by the indoor coil is determined at a position between the indoor coil and the supplemental heating means. The adjustable output heating element is selectively energized in response to the coil discharge temperature, independent of the second set point of the indoor thermostat.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: November 21, 2000
    Assignee: Carrier Corporation
    Inventors: Timothy J. Perry, Hongmei Liang, Larry J. Burkhart, Nathan D. Wright, Raymond A. Rust, Jr., Louis J. Sullivan
  • Method and apparatus for controlling supplemental heat in a heat pump system
    Patent number: 5967411
    Abstract: A method and apparatus for controlling supplemental heat added to the air stream passing from an indoor coil to an air supply duct of a heat pump system, the heat pump system being of the type that includes an indoor thermostat having a first set point for initiating heat supplied by the indoor coil and a second set point for initiating additional heat supplied by supplemental heating means. The supplemental heating elements include an adjustable output heating element for heating air passing from the indoor coil to the air supply duct. The coil discharge temperature of the air stream heated by the indoor coil is determined at a position between the indoor coil and the supplemental heating means. The adjustable output heating element is selectively energized in response to the coil discharge temperature, independent of the second set point of the indoor thermostat.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: October 19, 1999
    Assignee: Carrier Corporation
    Inventors: Timothy J. Perry, Hongmei Liang, Larry J. Burkhart, Nathan D. Wright, Raymond A. Rust, Jr., Louis J. Sullivan