Patents by Inventor John Ulcej

John Ulcej 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).

  • Blow molding extrusion apparatus and method
    Publication number: 20070273068
    Abstract: An apparatus for the extrusion a multi-layer parison comprises an extrusion blow molding head having a bore passing through the head with a diverter sleeve located within the bore. There is a first manifold in fluid communication with a first die inlet, the first manifold substantially surrounds the diverter sleeve and is in fluid communication with a proximal end of a flow path formed by the diverter sleeve and the bore; wherein the flow path extends from the proximal end to a head exit and a first land that has a variable width is positioned between the first manifold and the flow path. A second manifold is in fluid communication with a second die inlet, the second manifold substantially surrounds the diverter sleeve and is in fluid communication with the flow path at a first location downstream from the proximal end of the flow path; wherein the flow path has a width that increases at the first location; and a second land that has a variable width positioned between the second manifold and the flow path.
    Type: Application
    Filed: February 15, 2007
    Publication date: November 29, 2007
    Inventors: John Ulcej, Dale Pitsch, Timothy Callahan
  • Blow molding extrusion apparatus and method
    Publication number: 20070045904
    Abstract: An apparatus for the extrusion a multi-layer parison comprises an extrusion blow molding head having a bore passing through the head with a diverter sleeve located within the bore. There is a first manifold in fluid communication with a first die inlet, the first manifold substantially surrounds the diverter sleeve and is in fluid communication with a proximal end of a flow path formed by the diverter sleeve and the bore; wherein the flow path extends from the proximal end to a head exit and a first land that has a variable width is positioned between the first manifold and the flow path. A second manifold is in fluid communication with a second die inlet, the second manifold substantially surrounds the diverter sleeve and is in fluid communication with the flow path at a first location downstream from the proximal end of the flow path; wherein the flow path has a width that increases at the first location; and a second land that has a variable width positioned between the second manifold and the flow path.
    Type: Application
    Filed: August 31, 2005
    Publication date: March 1, 2007
    Inventors: John Ulcej, Dale Pitsch, Timothy Callahan