Patents by Inventor David C. Sayers

David C. Sayers 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).

  • Patent number: 11920544
    Abstract: A fuel supply device includes a main body, fuel chamber, fuel supply pipe and a fuel valve. The main body has a main bore with an inlet for air and an outlet through which a fuel and air mixture flows. The fuel chamber retains a supply of fuel. The fuel supply pipe has a passage communicating with the main bore and through which fuel from the fuel chamber flows to the main bore. And the fuel valve has a valve seat, a valve element movable relative to the valve seat between an open position and a closed position, an inlet upstream of the valve seat and is in communication with the fuel chamber, and an outlet downstream of the valve seat. The outlet is coaxially aligned with the passage of the fuel supply pipe and the fuel valve is electrically operated to move the valve element.
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: March 5, 2024
    Assignee: Walbro LLC
    Inventors: William E. Galka, Bryan K. Gangler, Jeffrey C. Hoppe, Adam M. McGilton, Bradley J. Roche, Albert L. Sayers, David L. Speirs
  • Patent number: 6628403
    Abstract: An apparatus capable of testing a displacement transducer having an extendable portion includes a slide capable of being moved along an axis and a measuring unit capable of determining a displacement of the slide along the axis. The extendable portion is connectible to the slide so that, when the extendible portion is connected and the slide is moved, the extendable portion is extended and retracted along a path. A method capable of testing a displacement transducer includes determining electrical signal values outputted from the transducer corresponding to displacements of the transducer and creating a statistical model based upon the electrical signal values and the displacements of the transducer. The method further includes determining a displacement error for each of the electrical signal values and the displacements of the transducer based upon the statistical model. Displacement errors that exceed a predetermined tolerance are determined.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: September 30, 2003
    Assignee: Lockheed Martin Corporation
    Inventors: David C. Sayers, Robert M. Blommel, Robert E. Kilthau, Erik A. Keeney, Nicole F. Rosales, Daren C. Davis
  • Publication number: 20030002047
    Abstract: An apparatus capable of testing a displacement transducer having an extendable portion includes a slide capable of being moved along an axis and a measuring unit capable of determining a displacement of the slide along the axis. The extendable portion is connectible to the slide so that, when the extendible portion is connected and the slide is moved, the extendable portion is extended and retracted along a path. A method capable of testing a displacement transducer includes determining electrical signal values outputted from the transducer corresponding to displacements of the transducer and creating a statistical model based upon the electrical signal values and the displacements of the transducer. The method further includes determining a displacement error for each of the electrical signal values and the displacements of the transducer based upon the statistical model. Displacement errors that exceed a predetermined tolerance are determined.
    Type: Application
    Filed: June 13, 2001
    Publication date: January 2, 2003
    Inventors: David C. Sayers, Robert M. Brommel, Robert E. Kilthau, Erik A. Keeney, Nicole F. Rosales, Daren C. Davis