Patents by Inventor Jan Magnus Andersson

Jan Magnus Andersson 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).

  • Diamond coated cutting tool insert
    Patent number: 6051079
    Abstract: A wear resistant, diamond enhanced cutting tool for excavating is disclosed. The cutting tool includes a cutting insert having a diamond coated cutting tip brazed to the cutting insert. The cutting tool is formed by brazing the insert to a tool body with a braze alloy by heating the insert and tool body to a temperature at which the braze alloy melts. The insert and tool body are then cooled to solidify the braze alloy and quenched to cause a martensitic transformation. Finally, the diamond enhanced tip is brazed to the insert while the temperature of the tool body is maintained below a temperature at which the tool body would soften. According to this method, the cutting tool is formed without creating a tempered zone of reduced hardness.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: April 18, 2000
    Assignee: Sandvik AB
    Inventors: Jan Magnus Andersson, Nathan Anderson
  • Mine roof drill bit and cutting insert therefor
    Patent number: 5996715
    Abstract: A rotary roof mine bit for drilling holes in the roof of a mine, comprises a bit body and an insert mounted in the bit body. The insert is formed of a hard material such as carbide or diamond. A top surface of the insert comprises two top sections which intersect a respective main surface of the insert to define first and second non-linear cutting edge. In one embodiment each cutting edge comprises a plurality of mutually angled segments. In another embodiment each cutting edge is continuously curved. Preferably an axial notch is disposed at a center of the top surface.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: December 7, 1999
    Assignee: Sandvik Rock Tools, Inc.
    Inventors: Kent Peay, David Alexander McCloskey, Jan Magnus Andersson
  • Diamond coated cutting tool insert and method of making same
    Patent number: 5837071
    Abstract: A wear resistant, diamond enhanced cutting tool for excavating is disclosed. The cutting tool includes a cutting insert having a diamond coated cutting tip brazed to the cutting insert. The cutting tool is formed by brazing the insert to a tool body with a braze alloy by heating the insert and tool body to a temperature at which the braze alloy melts. The insert and tool body are then cooled to solidify the braze alloy and quenched to cause a martensitic transformation. Finally, the diamond enhanced tip is brazed to the insert while the temperature of the tool body is maintained below a temperature at which the tool body would soften. According to this method, the cutting tool is formed without creating a tempered zone of reduced hardness.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: November 17, 1998
    Assignees: Sandvik AB, Megadiamond
    Inventors: Jan Magnus Andersson, Nathan Anderson
  • Mine roof drill bit and cutting insert therefor
    Patent number: 5829540
    Abstract: A rotary roof mine bit for drilling holes in the roof of a mine, comprises a bit body and an insert mounted in the bit body. The insert is formed of a hard material such as carbide or diamond. A top surface of the insert comprises two top sections which intersect a respective main surface of the insert to define first and second non-linear cutting edge. In one embodiment each cutting edge comprises a plurality of mutually angled segments. In another embodiment each cutting edge is continuously curved. Preferably an axial notch is disposed at a center of the top surface.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: November 3, 1998
    Assignee: Sandvik Rock Tools, Inc.
    Inventors: Kent Peay, David Alexander McCloskey, Jan Magnus Andersson