Patents by Inventor Rainer Grau

Rainer Grau 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).

  • Contact roll for belt grinding machines
    Patent number: 5085010
    Abstract: The invention concerns a belt grinding machine contact roll with a steel core and a sleeve surrounding the core. The sleeve includes an intermediate layer of elastically yieldable material, covering at least a portion of the steel core, and closed rings of a hard material surrounding the elastic intermediate layer, which rings are axially arranged next to one another along the core axis and are axially separated from one another by ring grooves.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: February 4, 1992
    Assignee: Hans Weber Maschinenfabrik GmbH
    Inventor: Rainer Grau