Patents Assigned to Irwin Industrial Tool Company
  • Quick change arbor, hole cutter, and method
    Patent number: 8366356
    Abstract: An arbor for quick change and standard hole cutters, wherein each hole cutter includes a central aperture and at least one drive pin aperture. The arbor comprises an arbor body including an end portion engageable within the central aperture, a drive shank opposite the end portion for engaging a power tool, and an aperture for receiving a pilot bit. The arbor further comprises a drive pin plate and/or collar having at least one drive pin receivable in a corresponding drive pin aperture of the hole saw for drivingly engaging the hole saw. The arbor, in at least one embodiment, further comprises a pilot bit mechanism for engaging and releasing a quick change or standard pilot bit.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: February 5, 2013
    Assignee: Irwin Industrial Tool Company
    Inventors: Joseph Thomas Novak, James E. Pangerc
  • Quick change arbor, hole cutter, and method
    Patent number: 8360696
    Abstract: An arbor is provided for small diameter quick change and standard hole saws. Each hole saw defines an outer diameter of less than 1¼ inches, a central aperture and at least one drive pin recess. The arbor comprises an arbor body including an end portion engageable within the central aperture, and a drive member having at least one drive pin receivable in a corresponding drive pin recess of the hole saw for rotatably driving the hole saw.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: January 29, 2013
    Assignee: Irwin Industrial Tool Company
    Inventors: Charles M. O'Keefe, James E. Pangerc
  • Quick change arbor, hole cutter, and method
    Patent number: 8328474
    Abstract: An arbor is provided for both quick change and standard hole saws. Each hole saw includes a central aperture and at least one drive pin aperture. The arbor comprises an arbor body including an end portion engageable within the central aperture, a drive shank opposite the end portion for engaging a power tool, and an axially extending pilot bit aperture for receiving either a quick change pilot bit or standard pilot bit. The arbor further comprises a drive pin plate having at least one drive pin receivable in a corresponding drive pin aperture of the hole saw for drivingly engaging the hole saw. The arbor further comprises a pilot bit mechanism having a first state for engaging a quick change pilot bit, a second state for engaging a standard pilot bit, and a third state for disengaging and releasing the inserted quick change or standard pilot bit from the arbor body.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: December 11, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: James E. Pangerc, Joseph Thomas Novak
  • Quick change arbor, hole cutter, and method
    Patent number: 8328476
    Abstract: An arbor is provided for small diameter quick change and standard hole cutters. Each hole cutter defines an outer diameter of less than 1¼ inches, a central aperture and at least one drive pin recess. The arbor comprises an arbor body including an end portion engageable within the central aperture, and a drive member having at least one drive pin for engaging a corresponding drive pin recess of the hole cutter for rotatably driving the hole cutter.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: December 11, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: Charles M. O'Keefe, Joseph Thomas Novak, James E. Pangerc
  • Quick change tool bit holder
    Patent number: 8308168
    Abstract: The quick change tool bit holder comprises a bore for receiving a bit. A retaining tooth, or plurality of teeth, is movable into engagement with the bit when the bit is inserted into the bore to retain the bit in the bore. An ejector ejects the bit from the bore when the retaining tooth is moved out of engagement with the bit. The ejector may comprise a spring that is compressed when the bit is inserted in the bore and a push button is biased by the spring into engagement with the bit. A sleeve forces the retaining tooth into engagement with the bit when said sleeve is in the locking position where the tooth moves at an angle relative to a longitudinal axis into contact with the bit. A method of operating the quick change tool bit holder is also disclosed.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: November 13, 2012
    Assignee: Irwin Industrial Tool Company
    Inventor: Derek J. Nash
  • Composite utility knife blade, and method of making such a blade
    Patent number: 8291602
    Abstract: A composite utility knife blade and method of making such a blade involves butt joining a tool steel wire to a front edge of an alloy steel backing strip. The wire is electron beam welded to the backing strip to form a composite strip defining a first metal portion formed by the alloy steel backing strip, a second metal portion formed by the tool steel wire, and a weld region joining the first and second metal portions. The composite strip is annealed and hardened such that the first metal portion defines a surface hardness within the range of approximately 38 Rc to approximately 52 Rc, and the second metal portion defines a surface hardness within the range of approximately 60 Rc to approximately 75 Rc. The hardened strip is then tempered, quenched, surface treated to form a sharpened cutting edge, scored, and separated into a plurality of blades.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: October 23, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: William B. Korb, Brian K. Douglas, Marcelo Oliveira
  • STEP DRILL BIT
    Publication number: 20120207557
    Abstract: A step drill bit comprises a body. A cutting edge insert is removably attached to the body. The body may be made of a first material and the cutting edge insert may be made of a second material where the second material is different than the first material. The cutting edge insert may define a plurality of progressively larger cutting diameters.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 16, 2012
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventor: Laverne R. Durfee
  • Reciprocating saw blade having variable-height teeth and related method
    Patent number: 8210081
    Abstract: A reciprocating saw blade, for use in a portable power reciprocating saw including a chuck for releasably engaging the saw blade, includes a tang having an elongated axis and being engageable with the chuck for attaching the saw blade to the reciprocating saw. The saw further includes a blade portion having a cutting edge that defines a plurality of cutting teeth. The cutting teeth define a repeating pattern of successive groups of teeth. Each group of teeth is less than about a half inch in length, and includes a plurality of laterally offset teeth, at least one relatively high first tooth and at least one relatively low second tooth. Prior to tooth set, the at least one relatively high first tooth is at least about 0.002 inch higher than the at least one relatively low second tooth.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: July 3, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: Asif Elliston, William B. Korb, Stephen A. Hampton
  • Four point utility blade and method
    Patent number: 8161654
    Abstract: A utility blade for use with conventional retractable and fixed blade utility knives comprising a blade body having a generally trapezoidal configuration defined by a cutting edge, an opposite back edge, a pair of opposing side edges and a pair of cutting points defined by the points of intersection between the side edges and the cutting edge. The blade further defines a pair of score lines, each proximate to one of the side edges. The score lines enable the user to remove a dulled or damaged cutting point, which in turn provides the user with two additional cutting points defined by the points of intersection between the score lines and the cutting edge. Further, the blade is configured with one or more notches strategically located on the back edge of the blade, such that each cutting point can extend from the utility knife at approximately the same distance.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: April 24, 2012
    Assignee: Irwin Industrial Tool Company
    Inventor: Matthew C. Green
  • Spade bit
    Patent number: 8147174
    Abstract: The drill bit comprises a cutting blade formed at one end of a shank. The cutting blade has a pair of cutting shoulders that extend inwardly from the outer sides of the blade toward the bit axis. A tip having converging sides that create a point extends from the shoulders. The cutting edge of each shoulder is beveled with respect to the plane of the face of the blade. A flute is provided on the leading portion of each blade face adjacent the cutting edges. Each flute is a smooth curve that creates a substantially uninterrupted recess on each face of the blade that facilitates chip removal, increases the drill rate and lowers the power required to drill a hole. A non-stick coating may be applied to the blade to further facilitate chip removal.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: April 3, 2012
    Assignee: Irwin Industrial Tool Company
    Inventor: Laverne R. Durfee
  • CUTTING EDGE FOR A CUTTING TOOL
    Publication number: 20120055030
    Abstract: A cutting tool comprises a first cutting edge and a second cutting edge movable into engagement with one another. The first cutting edge comprises an edge tip extending along at least a portion of the cutting edge. The edge tip has a geometry that lowers the cutting force required to cut hard articles and minimizes damage to the cutting edge. The edge tip has a flat end face defining a first edge and a second edge. A first side face extends from the first edge and a second side face extends from the second edge where the first side face and the second side face extend at an angle relative to one another such that the first side face and the second side face diverge as they extend away from the flat end face.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 8, 2012
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Mark B. Latronico, Joseph Lutgen
  • CUTTING EDGE FOR A CUTTING TOOL
    Publication number: 20120055031
    Abstract: A cutting tool comprises a first cutting edge and a second cutting edge where the cutting edges are movable into engagement with one another. At least one of the cutting edges comprises an edge tip extending along at least a portion of the cutting edge. The edge tip has a curved outer surface that in cross-section is bounded by a first line defined by the equation y=74x2 where x is within the range ?0.023 inches?x?0.023 inches and a second line defined by the equation y=294x2 where x is within the range ?0.012 inches?x?0.012 inches. The outer surface may also be within a range defined by predetermined coordinates.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 8, 2012
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Mark B. Latronico, Joseph Lutgen
  • Self-adjusting locking pliers
    Patent number: 8122792
    Abstract: The self-adjusting locking pliers include a fixed assembly having a fixed jaw supported at one end. A moveable jaw is pivotably supported on the fixed assembly at a slidable pivot connection. The slidable pivot connection includes a pawl provided with teeth. A rack of teeth includes first and second sets of teeth offset from one another by ½ of the pitch that may each be engaged by the teeth formed on pawl. A lever is attached to the fixed assembly and a linkage transmits a force applied to the lever to the jaws and locks the jaws in the clamping position. The linkage allows the angle between the links to be preset to thereby control the clamping force applied to the work piece. The movable jaw is selectively attached to the linkage in one of two positions such that the jaw span may be adjusted without affecting the geometry of the linkage.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: February 28, 2012
    Assignee: Irwin Industrial Tool Company, Inc.
    Inventors: David P. Engvall, Thomas M. Chervenak
  • Utility Knife
    Publication number: 20120042523
    Abstract: A utility knife comprises a blade carrier movable between retracted, extended and positions. A latch is movable with the blade carrier for locking the blade carrier in position. The blade carrier comprises a locking tab movable between a first position where the locking tab is engaged with the blade and a second position where the locking tab is released from the blade. An actuator moves the locking tab from the first position to the second position when the blade carrier is in the intermediate position and the actuator is moved to the unlocked position. The latch is engageable with a holder when the blade carrier is in the intermediate position. A retention member holds the blade on the plate where the retention member cannot be inserted into a notch on the blade. A blade guide guides the blade between the retention member and the plate.
    Type: Application
    Filed: August 17, 2010
    Publication date: February 23, 2012
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventor: Ralf Strauss
  • Utility Knife
    Publication number: 20120042521
    Abstract: A utility knife comprises a first housing portion carrying a strike plate and a second housing portion carrying a sliding nut assembly comprising a rotatable screw and a sliding nut. The sliding nut engages the strike plate upon rotation of the screw to draw the first housing portion toward the second housing portion.
    Type: Application
    Filed: August 17, 2010
    Publication date: February 23, 2012
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventor: Ralf Strauss
  • Multi-chip facet cutting saw blade and related method
    Patent number: RE43287
    Abstract: A metal cutting band saw blade has a plurality of cutting teeth defining a cutting direction, and a repeating tooth pattern of between 3 and 7 teeth. Each tooth defines a laterally-extending upper surface having a width and a height with respect to the back edge of the blade, and side surfaces extending laterally and downwardly on opposite sides of the upper surface relative to each other at acute angles relative to the upper surface. The teeth located rearwardly of the first tooth with respect to the cutting direction of the saw blade define progressively lower heights and progressively smaller acute angles of the side surfaces, and the widths of the upper surfaces of these teeth are greater than the width of the upper surface of the respective first tooth.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: April 3, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: Kenneth Hall, Dayananda Sukadhare
  • Hole saw
    Patent number: D659176
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: May 8, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: Joseph Thomas Novak, Matthew Christopher Green, Robert Richard Zielonka, William B. Korb
  • Mop bucket
    Patent number: D659926
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: May 15, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: Alfred Reneau Van Landingham, Jr., Jesse Andrew Matola
  • Utility knife blade
    Patent number: D660107
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: May 22, 2012
    Assignee: Irwin Industrial Tool Company
    Inventor: Matthew C. Green
  • Hole saw blade
    Patent number: D664574
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: July 31, 2012
    Assignee: Irwin Industrial Tool Company
    Inventor: William A. Burke, III