Patents by Inventor Jovan Vrcar

Jovan Vrcar 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).

  • SYSTEM, METHOD AND APPARATUS FOR DOWNHOLE TORQUE-TRANSFERRING BALL SCREW
    Publication number: 20240141734
    Abstract: A downhole tool has a main body that is cylindrical and includes a top coupling that couples to a drill string. A second body that is cylindrical is positioned at least partially within the main body. The second body has a bottom coupling that couples to a drill bit. Springs are positioned within the downhole tool and transmit an axial force to the drill bit. A first set of grooves is formed on an interior of the main body, and a second set of grooves is formed on an exterior of the second body. Balls travel within the first and second sets of grooves. At least some of the balls simultaneously engage the main body and the second body.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 2, 2024
    Applicant: General Downhole Tools, Ltd.
    Inventors: Michael Harvey, David Devlin, Jovan Vrcar
  • System, method and apparatus for downhole torque-transferring ball screw
    Patent number: 11873686
    Abstract: A downhole tool has a main body that is cylindrical and includes a top coupling that couples to a drill string. A second body that is cylindrical is positioned at least partially within the main body. The second body has a bottom coupling that couples to a drill bit. Springs are positioned within the downhole tool and transmit an axial force to the drill bit. A first set of grooves is formed on an interior of the main body, and a second set of grooves is formed on an exterior of the second body. Balls travel within the first and second sets of grooves. At least some of the balls simultaneously engage the main body and the second body.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: January 16, 2024
    Assignee: GENERAL DOWNHOLE TOOLS, LTD.
    Inventors: Michael Harvey, David Devlin, Jovan Vrcar