Patents by Inventor Johann R. Fleischmann

Johann R. Fleischmann 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).

  • Device for precision grinding and polishing of workpieces
    Patent number: 3959929
    Abstract: A device for precision grinding and polishing the surfaces of a workpiece such as the surfaces of molds or the like includes a base means on which the workpiece is movable in one plane. A stand supported on the base plate is provided with a carrying arm on which there is mounted an oscillating device operable to oscillate a tool. The carrying arm is arranged such that it may be adjustable in all three spacial coordinates. The oscillating tool serves as the carrier for the grinding medium for grinding and polishing a workpiece disposed on the base means.
    Type: Grant
    Filed: April 18, 1974
    Date of Patent: June 1, 1976
    Assignee: Doll & Co.
    Inventors: Johann R. Fleischmann, Willy Fechter, Heinrich Schmidt