Patents by Inventor Bernd Greuner

Bernd Greuner 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).

  • Rotating cutter tool
    Patent number: 3966349
    Abstract: Uneven wear of the cutting edges of rotating trepanning or drilling tools is avoided by employing at least two cutting blades, by providing a single support strip embedded in an elastically pliable material, and by arranging the cutting blades such, that the resultant force of the cutting forces produced during the drilling operation is directed to the support strip and is of a magnitude such that the lubricant film bracing said strip against the borehole wall does not break away.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: June 29, 1976
    Assignee: Gebrueder Heller
    Inventors: Mohamed Osman, Bernd Greuner