Patents by Inventor Daniel B. Holcombe

Daniel B. Holcombe 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).

  • Methods, apparatus and/or systems relating to fuel delivery systems for industrial machinery
    Patent number: 8316875
    Abstract: An assembly for delivering a supply of liquid fuel and a supply of purge air to a gas turbine engine, the assembly comprising: an annular dual-flow check valve for controlling the flow through concentric channels that have a common outlet, the annular dual-flow check valve comprising: an outer body and an inner body that define the concentric channels, which include an outer channel and an inner channel formed therein; a spring activated annular poppet that resides in the outer channel and has a range of motion in the axial direction; and an opening through the inner body that connects the outer channel to the inner channel; wherein the axial movement of the annular poppet is regulated by the pressure of the flow upstream of the annular poppet in the outer channel; and the axial range of motion of the annular poppet includes at least two axial positions.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: November 27, 2012
    Assignee: General Electric Company
    Inventors: Dean M. Erickson, David W. Smith, Douglas S. Byrd, Hua Zhang, Daniel B. Holcombe
  • METHODS, APPARATUS AND/OR SYSTEMS RELATING TO FUEL DELIVERY SYSTEMS FOR INDUSTRIAL MACHINERY
    Publication number: 20100162708
    Abstract: An assembly for delivering a supply of liquid fuel and a supply of purge air to a gas turbine engine, the assembly comprising: an annular dual-flow check valve for controlling the flow through concentric channels that have a common outlet, the annular dual-flow check valve comprising: an outer body and an inner body that define the concentric channels, which include an outer channel and an inner channel formed therein; a spring activated annular poppet that resides in the outer channel and has a range of motion in the axial direction; and an opening through the inner body that connects the outer channel to the inner channel; wherein the axial movement of the annular poppet is regulated by the pressure of the flow upstream of the annular poppet in the outer channel; and the axial range of motion of the annular poppet includes at least two axial positions.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventors: Dean M. Erickson, David W. Smith, Douglas S. Byrd, Hua Zhang, Daniel B. Holcombe