Patents by Inventor William G. Pacelli

William G. Pacelli 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).

  • Pneumatic trip valve partial stroking arrangement
    Patent number: 10648357
    Abstract: A pneumatic trip system for a turbine includes a valve member; a valve stem connected to the valve member; and an actuator assembly connected to the valve stem. The actuator assembly includes a cylinder; a piston connected to the valve stem, the piston dividing the cylinder into a first chamber and a second chamber; a biasing element disposed in the second chamber of the cylinder; and a pneumatic circuit in communication with the second chamber of the cylinder. The pneumatic circuit is configured to pressurize the second chamber of the cylinder to actuate the piston to move the valve stem and the valve member to an exercised position between the open position and the closed position while the first chamber is pressurized.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: May 12, 2020
    Assignee: Elliott Company
    Inventors: William G. Pacelli, James F. Walsh
  • PNEUMATIC TRIP VALVE PARTIAL STROKING ARRANGEMENT
    Publication number: 20170096908
    Abstract: A pneumatic trip system for a turbine includes a valve member; a valve stem connected to the valve member; and an actuator assembly connected to the valve stem. The actuator assembly includes a cylinder; a piston connected to the valve stem, the piston dividing the cylinder into a first chamber and a second chamber; a biasing element disposed in the second chamber of the cylinder; and a pneumatic circuit in communication with the second chamber of the cylinder. The pneumatic circuit is configured to pressurize the second chamber of the cylinder to actuate the piston to move the valve stem and the valve member to an exercised position between the open position and the closed position while the first chamber is pressurized.
    Type: Application
    Filed: September 22, 2016
    Publication date: April 6, 2017
    Inventors: William G. Pacelli, James F. Walsh