Patents by Inventor Kaj Virtanen

Kaj Virtanen 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: 7972090
    Abstract: An indexable turning insert includes two opposing larges sides formed by a support center part and a plurality of cutting parts projecting outwardly therefrom, each having a cutting edge extending between the sides and being spaced apart around the outer perimeter of the center part for indexing, has four the cutting parts. Each cutting part has a clearance side extending on one of the sides of the insert from the cutting edge of the cutting part towards the center part while making clearance angles in two dimensions with respect to the cutting edge, and the cutting edge of each cutting part makes an angle being below 90° by less than the clearance angles with the other of the sides of the insert.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: July 5, 2011
    Assignee: Seco Tools AB
    Inventors: Mats Jonsson, Patrick Jonsson, Kaj Virtanen
  • Patent number: 7887267
    Abstract: A cutting insert for chip removing machining is provided, the cutting insert including an elongate center part, cutting edges being arranged at the opposite ends of the center part, the cutting insert being provided with engagement members along two longitudinal, opposite sides, the cutting edges forming, in an end view of the cutting insert, a mutual angle (?). A tool is also provided and includes such a cutting insert. The cutting insert includes rake faces associated with the respective cutting edge that are facing the opposite direction in the vertical direction (H) of the cutting insert, and the mutual angle (?) is in the interval of 10°<?<20°, and a distance (H1) is measured between the intersection of the cutting edge with a center line (C1-C1) of the cutting insert and the outermost portion of the lower engagement member and in that in an end view of the cutting insert, the ratio between the distance (H1) and the height (H) of the cutting insert is the following: 0.5H?H1?0.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: February 15, 2011
    Assignee: Seco Tools AB
    Inventors: Matti Niemi, Kaj Virtanen
  • Patent number: 7641423
    Abstract: A device for chip removing machining includes first and second parts coupled together, wherein one of the parts includes a cutting edge. A coupling between the first and second parts includes two interacting surfaces and a clamp for forcing the surfaces together. The surfaces are profiled with male and female members, respectively, that are intercoupled to establish a form locking of the first and second parts against each other. The first and second parts are provided with central holes for receiving the clamp. The male and female members are configured to define only a single position of intercoupling.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: January 5, 2010
    Assignee: Seco Tools AB
    Inventors: Mats Blücher, Jonas Boman, Thomas Eriksson, Jan-Olf Lundeqvist, Kaj Virtanen
  • Publication number: 20090162154
    Abstract: An indexable turning insert (1) comprising two opposing larges sides formed by a support centre part (4) and a plurality of cutting parts (5-8) projecting outwardly therefrom, each having a cutting edge (9-12) extending between said sides and being spaced apart around the outer perimeter of the centre part for indexing, has four said cutting parts. Each cutting part has a clearance side (13) extending on one of said sides of the insert from the cutting edge of the cutting part towards said centre part while making clearance angles in two dimensions with respect to the cutting edge, and the cutting edge of each cutting part makes an angle being below 90° by less than said clearance angles with the other of said sides of the insert.
    Type: Application
    Filed: September 16, 2008
    Publication date: June 25, 2009
    Applicant: Seco Tools AB
    Inventors: Mats Jonsson, Patrick Jonsson, Kaj Virtanen
  • Publication number: 20090142149
    Abstract: A cutting insert for chip removing machining is provided, the cutting insert including an elongate center part, cutting edges being arranged at the opposite ends of the center part, the cutting insert being provided with engagement members along two longitudinal, opposite sides, the cutting edges forming, in an end view of the cutting insert, a mutual angle (?). A tool is also provided and includes such a cutting insert. The cutting insert includes rake faces associated with the respective cutting edge that are facing the opposite direction in the vertical direction (H) of the cutting insert, and the mutual angle (?) is in the interval of 10°<?<20°, and a distance (H1) is measured between the intersection of the cutting edge with a center line (C1-C1) of the cutting insert and the outermost portion of the lower engagement member and in that in an end view of the cutting insert, the ratio between the distance (H1) and the height (H) of the cutting insert is the following: 0.5H?H1?0.
    Type: Application
    Filed: November 28, 2008
    Publication date: June 4, 2009
    Applicant: SECO TOOLS AB
    Inventors: Matti Niemi, Kaj Virtanen
  • Patent number: 7407347
    Abstract: A tool for chip removing machining includes a holder and at least one cutting insert received in the holder. The holder is provided with at least one insert pocket, in which the cutting insert is intended to be received, and an opening connected to the insert pocket. The insert pocket has a first holding member provided along the periphery of the insert pocket, and the cutting insert has an anchor section and an edge portion connected to the anchor section. A second holding member is provided along the circumference of the anchor section. The first and the second holding members are intended to cooperate when the cutting insert is mounted in the insert pocket. The periphery of the insert pocket, at least partly, is defined by one or more circular arcs with a common center of rotation.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: August 5, 2008
    Assignee: Seco Tools AB
    Inventors: Kaj Virtanen, Gabor Kugler, Jens Bald
  • Patent number: 7331096
    Abstract: The present invention relates to cutting tools and, more particularly, to cutting tools having inserts and insert-receiving recesses with curved surfaces. The cutting tool includes a toolholder having a recess and an insert adapted to be received in the recess. The recess has a top surface with a curved portion, a bottom surface with a curved portion, and a fixed stop surface. The insert has a top surface with a curved portion, a bottom surface with a curved portion, and a stop surface. The curved portion of the top surface of the insert and the curved portion of the bottom surface of the insert are curved such that they abut against the curved portion of the top surface of the recess and the curved portion of the bottom surface of the recess, respectively, when the stop surface of the insert abuts against the fixed stop surface of the recess. The present invention also relates to a cutting tool kit, a cutting insert and a method for positioning an insert relative to a toolholder.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: February 19, 2008
    Assignee: Seco Tools AB
    Inventors: Gabor Kugler, Kaj Virtanen
  • Publication number: 20060062640
    Abstract: The present invention relates to cutting tools and, more particularly, to cutting tools having inserts and insert-receiving recesses with curved surfaces. The cutting tool includes a toolholder having a recess and an insert adapted to be received in the recess. The recess has a top surface with a curved portion, a bottom surface with a curved portion, and a fixed stop surface. The insert has a top surface with a curved portion, a bottom surface with a curved portion, and a stop surface. The curved portion of the top surface of the insert and the curved portion of the bottom surface of the insert are curved such that they abut against the curved portion of the top surface of the recess and the curved portion of the bottom surface of the recess, respectively, when the stop surface of the insert abuts against the fixed stop surface of the recess. The present invention also relates to a cutting tool kit, a cutting insert and a method for positioning an insert relative to a toolholder.
    Type: Application
    Filed: September 16, 2005
    Publication date: March 23, 2006
    Applicant: SECO TOOLS AB
    Inventors: Gabor Kugler, Kaj Virtanen
  • Patent number: 7001114
    Abstract: An apparatus for chip removing machining includes first and second parts which are intercoupled by a coupling. The coupling includes two interacting surfaces disposed on the first and second parts, respectively. The interacting surfaces are profiled to intermesh with one another to define an intermeshing region of the coupling. Each of the surfaces is profiled with first and second sets of grooves which define first and second main directions, respectively, which extend transversely to one another. At least one groove on each of the surfaces extends across less than the entire intermeshing region, wherein the surfaces define only one coupling position for the first and second parts.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: February 21, 2006
    Assignee: Seco Tools AB
    Inventors: Mats Blücher, Jonas Boman, Thomas Eriksson, Jan-Olf Lundeqvist, Kaj Virtanen
  • Publication number: 20050238444
    Abstract: A tool for chip removing machining includes a holder and at least one cutting insert received in the holder. The holder is provided with at least one insert pocket, in which the cutting insert is intended to be received, and an opening connected to the insert pocket. The insert pocket has a first holding member provided along the periphery of the insert pocket, and the cutting insert has an anchor section and an edge portion connected to the anchor section. A second holding member is provided along the circumference of the anchor section. The first and the second holding members are intended to cooperate when the cutting insert is mounted in the insert pocket. The periphery of the insert pocket, at least partly, is defined by one or more circular arcs with a common center of rotation.
    Type: Application
    Filed: April 27, 2005
    Publication date: October 27, 2005
    Applicant: SECO TOOLS AB
    Inventors: Kaj Virtanen, Gabor Kugler, Jens Bald
  • Publication number: 20040067112
    Abstract: An apparatus for chip removing machining includes first and second parts which are intercoupled by a coupling. The coupling includes two interacting surfaces disposed on the first and second parts, respectively. The interacting surfaces are profiled to intermesh with one another to define an intermeshing region of the coupling. Each of the surfaces is profiled with first and second sets of grooves which define first and second main directions, respectively, which extend transversely to one another. At least one groove on each of the surfaces extends across less than the entire intermeshing region, wherein the surfaces define only one coupling position for the first and second parts.
    Type: Application
    Filed: July 1, 2003
    Publication date: April 8, 2004
    Applicant: SECO TOOLS AB
    Inventors: Mats Blucher, Jonas Boman, Thomas Eriksson, Jan-Olf Lundeqvist, Kaj Virtanen
  • Publication number: 20040057785
    Abstract: A device for chip removing machining includes first and second parts coupled together, wherein one of the parts includes a cutting edge. A coupling between the first and second parts includes two interacting surfaces and a clamp for forcing the surfaces together. The surfaces are profiled with male and female members, respectively, that are intercoupled to establish a form locking of the first and second parts against each other. The first and second parts are provided with central holes for receiving the clamp. The male and female members are configured to define only a single position of intercoupling.
    Type: Application
    Filed: July 1, 2003
    Publication date: March 25, 2004
    Applicant: SECO TOOLS AB, FAGERSTA, SWEDEN.
    Inventors: Mats Blucher, Jonas Boman, Thomas Eriksson, Jan-Olf Lundeqvist, Kaj Virtanen
  • Patent number: D584752
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: January 13, 2009
    Assignee: Seco Tools AB
    Inventors: Mats Jonsson, Patrick Jonsson, Kaj Virtanen
  • Patent number: D605209
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: December 1, 2009
    Assignee: Seco Tools AB
    Inventors: Mats Jonsson, Patrick Jonsson, Kaj Virtanen
  • Patent number: D607025
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: December 29, 2009
    Assignee: Seco Tools AB
    Inventors: Matti Niemi, Kaj Virtanen