Patents by Inventor Wilhelm Gerhard Nienhaus

Wilhelm Gerhard Nienhaus 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).

  • Grinding of cutting tools with wavy cutting edges
    Patent number: 6632123
    Abstract: A CNC tool grinding machine has at least one rotatable grinding wheel (1) movable relative to a workpiece (2) for grinding a flute surface (3) of a blade in the workpiece (2). The machine is programmed with a path for the grinding wheel (1) calculated to grind a smooth cutting edge (5) for the blade, and programmed with perturbations to the path which vary the movement of the grinding wheel (1) to grind a wavy cutting edge (6) in the workpiece. With such a machine, it is possible to grind all surfaces of a wavy cutting edge in a single set up rather than requiring two more grinding and milling operations to form the wavy cutting edge.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: October 14, 2003
    Assignee: Anca Pty LTD
    Inventor: Wilhelm Gerhard Nienhaus