Patents by Inventor Friedrich Ostermann

Friedrich Ostermann 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).

  • Method for the manufacture of a light metal vehicle wheel
    Patent number: 5065510
    Abstract: A method and equipment for manufacturing a light metal vehicle wheel that has a rim drop base and a club-shaped thickened portion extending axially outward. The club-shaped portion has a tread on its outside surface for use in case of flat tire and has rim horns at its outer end. The method and equipment include pressing the rim horns radially inward by compression rings of a mold die. A radial inner surface of the club-shaped thickened portion is machined by chip removal so as to form an undercut next to the rim horn.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: November 19, 1991
    Assignee: Vereinigte Aluminium-Werke Aktiengesellschaft
    Inventors: Friedrich Ostermann, Hans-Heinrich Plath, Winfried Griep
  • Deep drawable aluminum sheet or strip
    Patent number: 4886713
    Abstract: A deep drawable sheet or strip of metal, preferably aluminum or an aluminum alloy having a surface treated for deep drawing characterized in that the surface has a microroughness, Ra, ranging between about 0.1 and 0.8 .mu.m and a uniform, honeycomb-shaped structure, wherein the honeycomb diameter ranges between about 20 .mu.m and about 200 .mu.m is provided.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: December 12, 1989
    Assignee: Vereingte Aluminum-Werke Aktiengesellschaft
    Inventors: Friedrich Ostermann, Christian Dumont, Rainer Balbach, Gerhard Sollner