Patents by Inventor Alfred Rander

Alfred Rander 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: 4424695
    Abstract: An arrangement for producing double conical springs from heated rod-shaped material, in which one side of a conical-shaped spring is formed with a cylindrical end corresponding to the largest winding diameter. The end is then shaped to a conical form. After being transferred from a spring winding station to an end roll-in unit, the spring is clamped, and a shaping member is inserted radially into the spring, and moved against a stop. With the aid of a roll-in head, the cylindrical spring end is conically formed. After the shaping member is radially removed from the spring, the latter is released and transported to a hardening process.
    Type: Grant
    Filed: November 12, 1980
    Date of Patent: January 10, 1984
    Assignee: Estel Hoesch Werke Aktiengesellschaft
    Inventors: Ernst Kirchhoff, Alfred Rander, Gunter Adolf