Patents Represented by Attorney, Agent or Law Firm Larry R. Meenan
  • Clamp pin tool holder
    Patent number: 6773210
    Abstract: An apparatus and method for clamping an insert in a tool holder includes a recess and a clamp pin with a lever portion having a curved surface at each end thereof. The recess includes an angled wall for engaging one of the curved surfaces of the lever portion. A wedge portion is disposed within the recess and operatively coupled to a lock screw such that rotation of the lock screw causes movement of the wedge portion in a first direction. A biasing force is applied to the lever portion to cause the clamp pin to move in a second direction that is different than the first direction. The wedge portion includes one or more angled walls for engaging one of the curved surfaces of the lever portion. Movement of the wedge portion in the first direction causes the angled wall of the recess to act as a cam surface to cause the clamp pin to pivot about a pivot point, P, located along a central axis of the clamp pin.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 10, 2004
    Assignee: Kennametal, Inc.
    Inventor: Robert A. Erickson
  • Cutting insert and method of making the same
    Patent number: 6769844
    Abstract: A cutting insert comprises a rake face, a plurality of flank faces including clearance faces having a positive clearance angle. A cutting edge is formed at an intersection between the rake faces and the flank face and a convex wiper cutting edge formed on the cutting edge. A method for forming the cutting insert comprises the steps of placing a powdered material into a die and pressing the powdered material in the die to achieve a form having a convex portion on the rake face and at least one substantially flat clearance face having a positive clearance angle. Next, the form is removed from the die and sintered.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: August 3, 2004
    Assignee: Kennametal Inc.
    Inventor: James M. Waggle
  • Replaceable ground engaging tip and wear resistant insert therefor
    Patent number: 6745709
    Abstract: A ground engaging tip for a seed boot attachment for depositing a seed within a furrow. The tip including a conical shape member formed of three generally planar shape side surfaces wherein two of the side surfaces meet to form an inclined leading edge extending from a tip of the conical shape member; and at least one wear resistant insert. The insert is secured to the leading edge of the ground engaging tip and includes a generally elongated bar having a leading end, a trailing end and three connecting side surfaces, a first side, second side and third side. The first, second and third side surfaces form a bar having a generally triangular cross-section, wherein the leading end of the bar is angled.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 8, 2004
    Assignees: Kennametal Inc., GEN Manufacturing Ltd.
    Inventors: Don C. Rowlett, Henry J. Bergen, David H. Bergen
  • Milling cutter
    Patent number: 6742968
    Abstract: A milling cutter comprising at least one cutting end and a cutter shank. The at least one cutting end including a core of cutter material having a cutter axis. The core includes a plurality of cutting edges extending therefrom, wherein the total cross-sectional area of the cutter material, taken at right angles to the cutter axis, increases gradually from the cutting end towards the cutter shank.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: June 1, 2004
    Assignee: Kennamtal Inc.
    Inventor: Vladimir Volokh
  • Milling cutter insert with chip control and milling cutter using the same
    Patent number: 6742969
    Abstract: A milling cutting insert is disclosed having a polygonal body of wear-resistant material, wherein the body has a top surface and a groove having a central axis extending along the entire length of one side of the insert having a central axis, and wherein: the group groove is tapered such that the width of the groove increases continuously along the side of the insert. A face milling cutter having an axial location surface for advancement in a direction of feed is also disclosed utilizing such a cutting insert so that a corner of the cutting insert is furthest from the axial location surface and the wide end of the groove associated with the cutting edge facing the direction of feed is adjacent to that corner.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: June 1, 2004
    Assignee: Kennametal Inc.
    Inventor: Brian D. Hoefler
  • Tool holder
    Patent number: 6739808
    Abstract: A tool holder that is adapted to break chips during a cutting operation is disclosed. The tool holder comprises a shank and a head. The shank is adapted to be received by a cutting machine. A head is provided with a pocket for receiving a cutting insert. The head has a flank surface. A chip breaker is provided on the flank surface adjacent the pocket. A clamp is provided for retaining the cutting insert in the pocket. A method for breaking chips comprises the steps of providing a chip breaker on the head of a tool holder adjacent a cutting insert and directing a chip into the chip breaker.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: May 25, 2004
    Assignee: Kennametal Inc.
    Inventor: Ranajit Ghosh
  • Cutting point for a drill
    Patent number: 6739809
    Abstract: A cutting point for a drill including a body having a periphery. The cutting point includes a leading cutting lip and a trailing cutting lip and a central chisel edge extending between the leading and trailing cutting lips and defining two symmetrical drill point halves. Each drill point half includes a primary relief surface, a secondary relief surface and a third relief surface. The third relief surface is inclined at an angle greater than the secondary relief surface and the secondary relief surface is inclined at an angle greater than primary relief surface.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: May 25, 2004
    Assignee: Kennametal Inc.
    Inventor: William A. Shaffer
  • Milling cutter
    Patent number: 6722823
    Abstract: A milling cutter having a plurality of on-edge cutting inserts mounted within pockets about the peripheral wall of the cutter body includes angled pockets which not only permit a greater number of pockets to accept inserts but furthermore permits relatively easy access to insert and remove mounting screws for securing each insert within a pocket.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: April 20, 2004
    Assignee: Kennametal Inc.
    Inventors: Ruy Frota de Souza, Scott W. Lebo
  • Cutting tool
    Patent number: 6702526
    Abstract: A cutting tool comprises a cutter body having at least one pocket therein. The pocket is adapted to receive a cutting insert cartridge. A position-adjusting device cooperates with the cartridge to move the cartridge in opposing directions. The body may have a pocket for receiving the cartridge. The device may include a cylindrical body member supported in a fixed axial relation within a bore in the body. The cylindrical body member may have an eccentric protrusion that engages the cartridge. The cylindrical body member may be displaceable to displace the protrusion and move the cartridge. A clamping wedge may be provided for clamping the cartridge in the pocket. The protrusion may engage a slot in a rear surface of the cartridge. The protrusion may engage the slot.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: March 9, 2004
    Assignee: Kennametal Inc.
    Inventors: Kevin M. Gamble, Thomas J. Long, II, Georg H. Wellein
  • Cutting insert
    Patent number: D487755
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: March 23, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, Joseph Victor Nelson
  • Cutting insert
    Patent number: D487756
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: March 23, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, John P. Brosnahan
  • Cutting insert
    Patent number: D487757
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: March 23, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, Joseph Victor Nelson
  • Cutting insert
    Patent number: D487758
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: March 23, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, Joseph Victor Nelson
  • Cutting insert
    Patent number: D487759
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: March 23, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, Joseph Victor Nelson
  • Cutting insert
    Patent number: D487901
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: March 30, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, John P. Brosnahan
  • Cutting insert
    Patent number: D488175
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: April 6, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, John P. Brosnahan
  • Cutting insert
    Patent number: D488176
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: April 6, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, Joseph Victor Nelson
  • Cutting insert
    Patent number: D488491
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: April 13, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, John P. Brosnahan
  • Cutting insert
    Patent number: D488492
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: April 13, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, John P. Brosnahan
  • Cutting insert
    Patent number: D491588
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: June 15, 2004
    Assignee: Kennametal Inc.
    Inventors: James Robert Kasperik, Joseph Victor Nelson