Patents by Inventor David P. Engvall

David P. Engvall 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).

  • Publication number: 20240051161
    Abstract: A multi-link cutting tool used to cut wire, pipe, cable, tube, chain and the like. The cutting tool utilizes a multi-link connecting linkage between the cutting jaw and the handles to increase the leverage obtained at the cutting edge, to control the relative motion of the jaws, and/or use to control the motion of the cutting edge. With this multi-link connecting mechanism, a smaller and more powerful cutting tool can be made.
    Type: Application
    Filed: April 10, 2023
    Publication date: February 15, 2024
    Inventors: David P. ENGVALL, Pavel DUGIN, Joshua J. AIKEN, Robert S. GEHRET
  • Publication number: 20230381926
    Abstract: A device and method for clamping an object with adjusting plier with dual mode is disclosed. In particular, a device is provided with a top jaw having a bottom handle, a bottom jaw having a top handle, a slot, and ridges located around the slot and a top handle with a distal end. A pawl pivot, which includes an engagement element, is provided for extending through the bottom jaw and into a slot of the bottom jaw. The top jaw can include a slot for receiving at least part of the bottom jaw and bottom handle. The top jaw can include an opening for operatively connecting at least part of the pawl pivot. The bottom jaw and bottom jaw pivot about an axis of the rivet, and the engagement element is moveable along the same axis from a first position to a second position and may provide ambidextrous use.
    Type: Application
    Filed: May 25, 2023
    Publication date: November 30, 2023
    Inventors: David P. Engvall, Pavel Dugin, Nick Clontz, Chris Ibrahim
  • Publication number: 20210331254
    Abstract: A chuck including a chuck body that supports a plurality of jaws. An outer sleeve is axially fixed with respect to the chuck body. A nut is coupled to the outer sleeve, and the nut is movable axially and radially relative to the chuck body. The nut interacts with the jaws such that when the outer sleeve rotates, the nut moves axially and radially relative to the body.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 28, 2021
    Inventors: Matthew Stanton, David P. Engvall
  • Patent number: 11148209
    Abstract: A chuck including a chuck body that supports a plurality of jaws. An outer sleeve is axially fixed with respect to the chuck body. A nut is coupled to the outer sleeve, and the nut is movable axially and radially relative to the chuck body. The nut interacts with the jaws such that when the outer sleeve rotates, the nut moves axially and radially relative to the body.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: October 19, 2021
    Assignee: Black & Decker Inc.
    Inventors: Matthew Stanton, David P. Engvall
  • Publication number: 20200086396
    Abstract: A chuck including a chuck body that supports a plurality of jaws. An outer sleeve is axially fixed with respect to the chuck body. A nut is coupled to the outer sleeve, and the nut is movable axially and radially relative to the chuck body. The nut interacts with the jaws such that when the outer sleeve rotates, the nut moves axially and radially relative to the body.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 19, 2020
    Inventors: Matthew Stanton, David P. Engvall
  • Patent number: 10357874
    Abstract: A storage container can include a bottom surface and one or more sides that extend up from the bottom surface to define a storage area. The storage container can also include a lid rotatably coupled to at least one of the sides and can be moved from a closed position, preventing or limiting access to the storage area, to an open position, allowing access. The storage container can also include a work surface rotatably coupled to a bottom side of the lid. When the lid is opened, the work surface is rotated into a substantially horizontal position providing a planar top surface to work on. The storage container can also include a leg support assembly that is rotatably coupled to one or more of the side walls of the storage container and can be adjusted into a support position to provide vertical support for a portion of the work surface.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: July 23, 2019
    Assignee: Irwin Industrial Tool Company
    Inventors: David P. Engvall, Stephen Pennington, Michael Reedy, Adam Dudycha, Jose C. Santiago
  • Publication number: 20170129097
    Abstract: A storage container can include a bottom surface and one or more sides that extend up from the bottom surface to define a storage area. The storage container can also include a lid rotatably coupled to at least one of the sides and can be moved from a closed position, preventing or limiting access to the storage area, to an open position, allowing access. The storage container can also include a work surface rotatably coupled to a bottom side of the lid. When the lid is opened, the work surface is rotated into a substantially horizontal position providing a planar top surface to work on. The storage container can also include a leg support assembly that is rotatably coupled to one or more of the side walls of the storage container and can be adjusted into a support position to provide vertical support for a portion of the work surface.
    Type: Application
    Filed: November 4, 2016
    Publication date: May 11, 2017
    Inventors: DAVID P. ENGVALL, STEPHEN PENNINGTON, MICHAEL REEDY, ADAM DUDYCHA, JOSE C. SANTIAGO
  • Patent number: 9533400
    Abstract: A locking pliers preferably includes a fixed jaw, a movable jaw, a fixed handle, an adjusting screw, a biasing spring, a toggle link, a power triangle link, at least one tie link and a movable handle. The fixed jaw, the movable jaw, the fixed handle, the adjusting screw and the biasing spring are preferably taken from an Irwin item no. 502L3 vise grips, but other parts may also be used. A second embodiment of the locking pliers preferably includes a fixed jaw, a movable jaw, a fixed handle, an adjusting screw, a biasing spring, a toggle link, two power links, at least one tie link, a release link and a movable handle. The fixed jaw, the movable jaw, the fixed handle, the adjusting screw and the biasing spring are preferably taken from an Irwin item no. 502L3 vise grips.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: January 3, 2017
    Inventors: Robert L. Aldredge, Michael Bogart, Daniel J Schaefer, David P. Engvall
  • Publication number: 20150247716
    Abstract: A tape measure has a housing and a blade retractably mounted in the housing such that an end of the blade may be extended from the housing. The blade may have a profile with a sinusoidal shape. A reinforcement member may be attached to the blade over a length of the blade. The sinusoidal shape or the reinforcement member extends from the end of the blade for a predetermined distance. The sinusoidal shape or the reinforcement member may be provided from a point along the blade spaced from the end of the blade and a second point along the length of the blade.
    Type: Application
    Filed: February 25, 2015
    Publication date: September 3, 2015
    Inventors: William Craig, Matthew Justin Paquette, David P. Engvall, Douglas Johnson
  • Patent number: 8776646
    Abstract: A locking tool is provided that comprises an adjustment mechanism that can adjust the distance between the jaws, and the clamping force exerted by the jaws on a workpiece, using the same hand that grips the handles of the tool. A locking tool is also provided where the tool can be locked by moving the handles toward one another. Once locked, the pliers can be unlocked and the jaws opened by squeezing the handles toward one another in the same manner, in the same direction and using the same hand as was done to lock the pliers. As a result the pliers can be locked and unlocked using one-hand and using the same hand movement to both lock and unlock the pliers.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: July 15, 2014
    Assignee: Irwin Industrial Tool Company
    Inventors: Thomas M. Chervenak, David P. Engvall
  • Patent number: 8656813
    Abstract: A locking pliers preferably includes a fixed jaw, a movable jaw, a fixed handle, an adjusting screw, a biasing spring, a toggle link, a power triangle link, at least one tie link and a movable handle. The fixed jaw, the movable jaw, the fixed handle, the adjusting screw and the biasing spring are preferably taken from an Irwin item no. 502L3 vise grips, but other parts may also be used. A second embodiment of the locking pliers preferably includes a fixed jaw, a movable jaw, a fixed handle, an adjusting screw, a biasing spring, a toggle link, two power links, at least one tie link, a release link and a movable handle. The fixed jaw, the movable jaw, the fixed handle, the adjusting screw and the biasing spring are preferably taken from an Irwin item no. 502L3 vise grips.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: February 25, 2014
    Inventors: Robert L. Aldredge, Michael Bogart, Daniel J Schaefer, David P. Engvall
  • 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
  • Patent number: 8056451
    Abstract: The pliers comprise a fixed assembly and a second jaw movable relative to the first jaw between an open position and a closed, locked position. A movable pivot connects the second jaw to the fixed assembly such that the movable pivot can move relative to the fixed assembly when the second jaw is in the closed, locked position and a torque is applied to the pliers. The second jaw is configured such that a resultant force on the second jaw is inside of the fixed pivot, between the fixed pivot and the movable pivot.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: November 15, 2011
    Assignee: Irwin Industrial Tool Company
    Inventors: Thomas M. Chervenak, David P. Engvall
  • Publication number: 20110259149
    Abstract: A method of making a cutting tool comprises providing a lever with a jaw having a cutting edge and a body arranged such that the cutting edge is offset from the body; providing a rotary cutting tool with an edge profile that may be complex and/or non-planar to form a complementary edge profile geometry on the cutting edge by moving the edge profile geometry of the rotary cutting tool along the length of the cutting edge.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 27, 2011
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Thomas M. Chervenak, David P. Engvall, Mark B. Latronico
  • Publication number: 20110258860
    Abstract: A cutting tool and method comprises a first lever having a first jaw at one end. A second lever is connected to the first lever at a first pivot where the second lever has a second jaw that is opposed to the first jaw. A third lever is connected to the first lever at a second pivot and connected to the second lever at a third pivot such that relative movement of the third lever relative to the first lever between an open position and a closed position defines a stroke of the tool that corresponds to movement of the hand contact points on the levers toward one another. The third pivot comprises a pin engaging a cam surface where the cam surface has a shape such that the mechanical advantage may increase and decrease through the stroke of the tool and may be variable through the stroke of the jaws.
    Type: Application
    Filed: April 7, 2011
    Publication date: October 27, 2011
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Thomas M. Chervenak, David P. Engvall, Mark B. Latronico, Joseph Lutgen
  • Publication number: 20110203421
    Abstract: A locking tool is provided that comprises an adjustment mechanism that can adjust the distance between the jaws, and the clamping force exerted by the jaws on a workpiece, using the same hand that grips the handles of the tool. A locking tool is also provided where the tool can be locked by moving the handles toward one another. Once locked, the pliers can be unlocked and the jaws opened by squeezing the handles toward one another in the same manner, in the same direction and using the same hand as was done to lock the pliers. As a result the pliers can be locked and unlocked using one-hand and using the same hand movement to both lock and unlock the pliers.
    Type: Application
    Filed: February 14, 2011
    Publication date: August 25, 2011
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Thomas M. Chervenak, David P. Engvall
  • Patent number: 7861622
    Abstract: A lockable pliers comprises a fixed assembly comprising a first handle supporting a first jaw. A second jaw is movable relative to the first jaw between an open position and a closed, locked position. A second handle is movable relative to the first handle and is connected to the second jaw at a fixed pivot. A toggle-link locking mechanism locks the second jaw in the closed, locked position. A movable pivot connects the second jaw to the fixed assembly such that the second jaw can move relative to the fixed assembly when the second jaw is in the closed, locked position and a torque is applied to the pliers.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: January 4, 2011
    Assignee: Irwin Industrial Tool Company
    Inventors: Thomas M. Chervenak, David P. Engvall
  • Publication number: 20100307640
    Abstract: A wood boring drill bit or cutting pliers is disclosed comprising a cutting head made of a first material. A pocket is formed in the cutting head and a filler material is welded in the pocket. A cutting edge is formed on the filler material. The method of making the tool comprises forming a cutting head of a first material having a pocket. A filler material is welded into the pocket. A cutting edge is formed on the filler material such as by grinding or machining.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 9, 2010
    Inventors: La Verne R. Durfee, David P. Engvall, Anderson Ednei Nunes, Paulo Roque Bassotto
  • Patent number: D635427
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: April 5, 2011
    Assignee: Irwin Industrial Tool Company
    Inventors: Thomas M. Chervenak, David P. Engvall, Brett Lucus
  • Patent number: D651060
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: December 27, 2011
    Assignee: Irwin Industrial Tool Company
    Inventors: Thomas M. Chervenak, David P. Engvall, Brett Lucus