Patents by Inventor James M. Prue

James M. Prue 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).

  • Mechanism for adjusting a valve for regulating the flow of plastic to an extrusion die
    Patent number: 7384259
    Abstract: A manifold is connected between an extruder and the associated die assembly to supply plastic flow to the die. The output from the extruder is split into multiple passages in which each manifold passage supplies plastic flow to an extrusion passage within the die assembly. An adjustable throttle valve is positioned within each manifold passage to regulate the flow volume through the manifold passage, thereby controlling the output of the die assembly. An adjustment mechanism is constructed having a lever arm actuated by a screw to provide movement of a spring biased part of the valve to open and close a valve seat against a valve stem.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: June 10, 2008
    Assignee: Guill Tool & Engineering Co, Inc.
    Inventor: James M. Prue
  • Manifold for regulating the flow of plastic to an extrusion die
    Patent number: 6971865
    Abstract: A manifold is connected between an extruder and the associated die assembly to supply plastic flow to the die. The output from the extruder is split into multiple passages in which each manifold passage supplies plastic flow to an extrusion passage within the die assembly. An adjustable throttle valve is positioned within each manifold passage to regulate the flow volume through the manifold passage, thereby controlling the output of the die assembly.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: December 6, 2005
    Assignee: Guill Tool & Engineering Co., Inc.
    Inventor: James M. Prue
  • Manifold for regulating the flow of plastic to an extrusion die
    Publication number: 20040115293
    Abstract: A manifold is connected between an extruder and the associated die assembly to supply plastic flow to the die. The output from the extruder is split into multiple passages in which each manifold passage supplies plastic flow to an extrusion passage within the die assembly. An adjustable throttle valve is positioned within each manifold passage to regulate the flow volume through the manifold passage, thereby controlling the output of the die assembly.
    Type: Application
    Filed: December 11, 2002
    Publication date: June 17, 2004
    Inventor: James M. Prue
  • Extrusion die system with balanced flow passage
    Patent number: 6077062
    Abstract: In an extrusion die flow channels supply molten plastic to a pair of distribution grooves constructed in the upstream face of the die component adjacent to the die body. The die body becomes more universal and can be used for a variety of applications by replacing the die component with alternate designs of distribution grooves.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: June 20, 2000
    Assignee: Guill Tool & Engineering Co., Inc.
    Inventors: Arthur Roger Guillemette, James M. Prue