Patents by Inventor Randy P. Holbrook

Randy P. Holbrook 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).

  • System for controlling the temperature of an aircraft airfoil component
    Patent number: 6906537
    Abstract: An airfoil temperature control arrangement includes a resistive heater element. A plurality of detectors allow a controller to gather resistance information at various intervals along the resistive heater element. Determining the resistance of the corresponding portions of the heater element allows the controller to utilize a known relationship between resistance and temperature for the material selected to make the resistive heater element. In one example, a nickel alloy or other material having a high coefficient of resistance is chosen to provide the controller with the ability to determine a temperature for each portion of the heater element. The determined temperature information is used, for example, to monitor whether any portion of the heater element has become delaminated from the airfoil surface.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: June 14, 2005
    Assignee: Hamilton Sundstrand
    Inventors: Joshua I. Goldberg, Randy P. Holbrook
  • System for controlling the temperature of an aircraft airfoil component
    Publication number: 20040032270
    Abstract: An airfoil temperature control arrangement includes a resistive heater element. A plurality of detectors allow a controller to gather resistance information at various intervals along the resistive heater element. Determining the resistance of the corresponding portions of the heater element allows the controller to utilize a known relationship between resistance and temperature for the material selected to make the resistive heater element. In one example, a nickel alloy or other material having a high coefficient of resistance is chosen to provide the controller with the ability to determine a temperature for each portion of the heater element. The determined temperature information is used, for example, to monitor whether any portion of the heater element has become delaminated from the airfoil surface.
    Type: Application
    Filed: June 26, 2003
    Publication date: February 19, 2004
    Inventors: Joshua I. Goldberg, Randy P. Holbrook