Patents by Inventor Heiner Baumgärtner

Heiner Baumgärtner 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).

  • Single-lip drill and method for the production thereof
    Patent number: 7753627
    Abstract: Disclosed is a single-lip drill comprising a drill head (11) that is provided with a blade (12) which is embodied on said drill head. The blade encompasses a cutting edge (19) for machining a workpiece (16) in a cutting manner. At least one chip-forming device (21) which shapes chips (22) cut by the cutting edge is associated with the cutting edge. The chip-forming device is provided with a positive cutting angle (gamma) such that the mechanical and thermal stress can be reduced in the area of the blade (12). In addition, the chip-forming device can comprise a functional coating (29a, 29b) which is made especially of hard material and is applied after providing the drill with the exterior shape thereof.
    Type: Grant
    Filed: April 3, 2004
    Date of Patent: July 13, 2010
    Assignee: TBT Tiefbohrtechnik GmbH & Co.
    Inventors: Hermann Randecker, Heiner Baumgärtner