Patents by Inventor Kenneth C. Hagerman

Kenneth C. Hagerman 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: 4054048
    Abstract: A rotary metal extrusion apparatus comprises a rotatable drum having a circumferential groove around its outer edge. A shoe, fixed relative to the drum, projects into the groove to form an elongated passageway having one end blocked by an abutment mounted in fixed relation to the shoe. The abutment has an extrusion orifice or die therein or adjacent thereto. The extrusion material is fed into the other end of the passageway and is drawn toward the die and abutment by frictional forces of the drum's groove. The pressure on the extrusion material causes its yield point to be exceeded so that the material is extruded through the die orifice. The portion of the shoe which is in sliding contact with the drum comprises a bearing material to allow sliding contact with the drum surface and reduction of flash through the space between the shoe and the drum.
    Type: Grant
    Filed: September 24, 1976
    Date of Patent: October 18, 1977
    Assignee: Reynolds Metals Company
    Inventor: Kenneth C. Hagerman