Patents by Inventor Oswald Tutzer

Oswald Tutzer 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).

  • Shearing machine with roof-bolt drilling and setting devices
    Patent number: 5050934
    Abstract: A shearing machine with roof-bolt drilling and setting devices which are jointedly connected to the shearing machine and can be hydraulically braced between roof and floor of the roadway. A multiplicity of roof-bolt drilling and setting devices are connected to a common supporting frame, the supporting frame being connected to the shearing machine via guide bars running in the longitudinal direction of the machine.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: September 24, 1991
    Assignee: Voest-Alpine Zeltweg Gesellschaft m.b.H.
    Inventors: Erich Brandl, Oswald Tutzer, Alfred Zitz