Patents by Inventor Ake Sjölander

Ake Sjölander 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).

  • Patent number: 7393163
    Abstract: A drill includes a tip-forming front end having at least two straight cutting edges and at least two chip flutes extending from the tip end towards a rear end. Each cutting edge includes an inner portion disposed near a center line of the drill, and an outer portion disposed farther from the center line. The peripheral end of each cutting edge is in the form of a smoothly curved nose portion protruding radially with respect to the center line. The nose portion is formed by several circular segments having mutually different radii (R1, R2, R3). Adjacent ones of the radii are of different size.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: July 1, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Jan Edvardsson, Jörgen Wiman, Ake Sjölander