Patents by Inventor Lars Lindstedt

Lars Lindstedt 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).

  • Cutting insert for cutting and grooving tools
    Patent number: 5375948
    Abstract: The present invention relates to a turning insert that comprises a generally rectangularly shaped body having a front end surface with a main cutting edge at the intersection between the front end surface and an upper land area. A chipforming area is provided in the forward portion of the upper surface and is shaped in the form of a number of distinctly provided recesses and ridges in order to promote improved chip control and to obtain narrower chips in grooving operations.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: December 27, 1994
    Assignee: Sandvik AB
    Inventor: Lars Lindstedt
  • Metal cutting insert with rounded cutting edge
    Patent number: 5205680
    Abstract: An insert for metal turning and grooving has an annular cutting edge. A chipformer surface is disposed radially inside of the cutting edge. A chip breaking wall is disposed radially inside of the chipformer surface. The chip breaking wall is inclined upwardly. A first section of the chip breaking wall located adjacent a front end of the insert has a steeper inclination than a second section thereof spaced circumferentially from the first section in a direction toward the rear end of the insert. The inclination of the chip breaking wall varies progressively from the first section to the second section.
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: April 27, 1993
    Assignee: Sandvik AB
    Inventor: Lars Lindstedt
  • Cutting insert for cutting and grooving tools
    Patent number: RE37595
    Abstract: The present invention relates to a turning insert that comprises a generally rectangularly shaped body having a front end surface with a main cutting edge at the intersection between the front end surface and an upper land area. A chipforming area is provided in the forward portion of the upper surface and is shaped in the form of a number of distinctly provided recesses and ridges in order to promote improved chip control and to obtain narrower chips in grooving operations.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: March 19, 2002
    Assignee: Sandvik AB
    Inventor: Lars Lindstedt
  • Cutting insert
    Patent number: D343400
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: January 18, 1994
    Assignee: Sandvik AB
    Inventors: Lars Lindstedt, Par Tagtstrom
  • Cutting insert
    Patent number: D350549
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: September 13, 1994
    Assignee: Sandvik AB
    Inventors: Lars Lindstedt, Par Tagtstrom