Patents by Inventor Georg Stangl

Georg Stangl 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: 4021170
    Abstract: Extruder with blow head comprising a cylindrical body containing at least one rotating screw in coaxial position, a feeding device for the thermoplastic material near one end of the cylinder and a blow head comprising a housing and a mandrel at the other end of the cylinder forming a slit tapering in the direction of flow of the plasticized material and through which said material issues, the screw and the blow head being arranged in one plane, and directly behind the blow head a cooling device for cooling the extruded tube, whereinA. the screw and the mandrel are rigidly connected with each other without any distortion being possible,B. the lip of the housing of the blow head protrudes from 0.1 to 10 mm over the lip of the mandrel,C. the diameter of the slit formed by the housing and the mandrel is in the range of from 1 to 20 mm in the most narrow area, andD.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: May 3, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinz-Erhardt Andersen, Georg Stangl
  • Patent number: 3958913
    Abstract: The cooling device consists of a plurality of cooling elements which are arranged in such a manner that they surround the tubular sheeting without interspace. Cooling elements with plane inner surface alternate with cooling elements with curved inner surface, the plane surfaces and the projections of the curved surfaces each have the shape of a regular trapezoid. The cooling elements can be adjusted to the diameter of the tubular sheeting in transverse as well as in oblique direction with respect to the axis of the hollow space formed by the cooling elements.
    Type: Grant
    Filed: November 26, 1974
    Date of Patent: May 25, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Georg Stangl