Patents by Inventor Leopold Schopplein

Leopold Schopplein 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 of making piston rod for shock absorbers
    Patent number: 4561164
    Abstract: A piston rod particularly for shock absorbers and spring devices has been shown in the illustrative embodiments. The piston rod comprises a tubular member which tubular member is provided with at least one extension of reduced diameter. The extension is intended for being fastened to associated structural members. In view of fluid-tightly closing the interior of the piston rods on at least one of their ends, a closure member is provided within the cavity defined by the extension of reduced diameter. The closure member is fastened to the piston rod by the reduction of the diameter of the piston rod.
    Type: Grant
    Filed: February 6, 1984
    Date of Patent: December 31, 1985
    Assignee: Fichtel & Sachs AG
    Inventors: Felix Wossner, Hermann Itzinger, Leopold Schopplein