Patents by Inventor Glen DeFreitas

Glen DeFreitas 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).

  • Tapered hollow pole extruder
    Patent number: 7458799
    Abstract: An extrusion mold head is provided having outer mold tapered cams that form an automatically contracting or expanding mold surface during extrusion of the poles, allowing the formation of tapered outer diameter on each pole. The extrusion mold head also has an inner mold tapered mandrel that is advanced or withdrawn in concert with the movement of the outer mold head pieces. The inner mold surface thereby automatically contracts or expands as required during extrusion of the poles to form either a uniform thickness or a tapering thickness of the wall of each pole.
    Type: Grant
    Filed: February 3, 2006
    Date of Patent: December 2, 2008
    Inventor: Glen DeFreitas
  • Tapered hollow pole extruder
    Publication number: 20070184147
    Abstract: An extrusion mold head is provided having outer mold tapered cams that form an automatically contracting or expanding mold surface during extrusion of the poles, allowing the formation of tapered outer diameter on each pole. The extrusion mold head also has an inner mold tapered mandrel that is advanced or withdrawn in concert with the movement of the outer mold head pieces. The inner mold surface thereby automatically contracts or expands as required during extrusion of the poles to form either a uniform thickness or a tapering thickness of the wall of each pole.
    Type: Application
    Filed: February 3, 2006
    Publication date: August 9, 2007
    Inventor: Glen DeFreitas