Patents by Inventor Johan JELGERT

Johan JELGERT 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).

  • APPARATUS FOR ROCK HANDLING, ROCK DRILLING UNIT AND METHOD
    Publication number: 20210115737
    Abstract: An apparatus for handling drilling rods, a rock drilling unit and a method of handling drilling rods is provided. The apparatus includes a rod feeder and a swing device, which cooperate and move drilling rods between a pick-up position and a drilling center defined by a rock drilling machine of the drilling unit. The rod feeder and the swing device are separate devices, which are independently controllable.
    Type: Application
    Filed: January 24, 2019
    Publication date: April 22, 2021
    Inventors: Juha TOIVOLA, Johan JELGERT, Ilkka LAHDELMA, Stefan BENGTSSON, SR., Ola FREDIN
  • Method of disconnecting a drill string at a drill rig
    Patent number: 10167688
    Abstract: A method and apparatus for disconnecting an end rod from a drill string coupled together by a threaded connection is provided. A rod handling apparatus includes a gripper unit having a floating sled with a sensor unit configured to monitor relative axial position of the sled relative to a frame of the gripper unit to determine a decoupling of the threaded connection and a separation of an end rod from the drill string.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 1, 2019
    Assignee: SANDVIK INTELLECTIAL PROPERTY AB
    Inventors: Johan Jelgert, Lars-Erik Larsson, Per Vilen, Kent Evermark
  • Drill rod gripping apparatus
    Patent number: 9745806
    Abstract: A drill rod gripping apparatus to grip and impart rotational motion to a drill rod including a sled axially mounted at a frame and having first and second jaws moveably mounted at the sled to allow a substantially linear lateral movement across the sled to and from one another. A plurality of rod engagers are mounted at each jaw with at least one of the engagers including an abrasive surface formed from a coating to increase the frictional force between the drill rod and the gripping apparatus.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: August 29, 2017
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Johan Jelgert, Lars-Erik Larsson, Krister B Eriksson, Ola Fredin
  • Drilling rig rod handling apparatus
    Patent number: 9650849
    Abstract: A drill rod handling apparatus is configured to feed rods to and from a drill string created by a drill rig. The apparatus includes a gripper unit configured to contact and hold a rod to be transported to the drill rig and an alignment tool mounted at the gripper unit to provide correct mating of the rod ends during coupling.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: May 16, 2017
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Johan Jelgert, Lars-Erik Larsson, Per Vilen, Kent Evermark
  • DRILLING RIG ROD HANDLING APPARATUS
    Publication number: 20160115751
    Abstract: A drill rod handling apparatus is configured to feed rods to and from a drill string created by a drill rig. The apparatus includes a gripper unit configured to contact and hold a rod to be transported to the drill rig and an alignment tool mounted at the gripper unit to provide correct mating of the rod ends during coupling.
    Type: Application
    Filed: April 9, 2014
    Publication date: April 28, 2016
    Inventors: Johan JELGERT, Lars-Erik LARSSON, Per VILEN, Kent EVERMARK
  • DRILL ROD GRIPPING APPARATUS
    Publication number: 20160115750
    Abstract: A drill rod gripping apparatus to grip and impart rotational motion to a drill rod including a sled axially mounted at a frame and having first and second jaws moveably mounted at the sled to allow a substantially linear lateral movement across the sled to and from one another. A plurality of rod engagers are mounted at each jaw with at least one of the engagers including an abrasive surface formed from a coating to increase the frictional force between the drill rod and the gripping apparatus.
    Type: Application
    Filed: April 9, 2014
    Publication date: April 28, 2016
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Johan JELGERT, Lars-Erik LARSSON, Krister B ERIKSSON, Ola FREDIN
  • METHOD OF DISCONNECTING A DRILL STRING AT A DRILL RIG
    Publication number: 20160097245
    Abstract: A method and apparatus for disconnecting an end rod from a drill string coupled together by a threaded connection is provided. A rod handling apparatus includes a gripper unit having a floating sled with a sensor unit configured to monitor relative axial position of the sled relative to a frame of the gripper unit to determine a decoupling of the threaded connection and a separation of an end rod from the drill string.
    Type: Application
    Filed: April 9, 2014
    Publication date: April 7, 2016
    Inventors: Johan JELGERT, Lars-Erik LARSSON, Per VILEN, Kent EVERMARK