Patents Assigned to Rotojar Limited
  • Jarring apparatus
    Patent number: 10280700
    Abstract: A downhole jarring apparatus for use in jarring an object in a bore includes a first jarring portion including a first impact surface and a second jarring portion including a second impact surface. The apparatus includes a rotatable jarring arrangement operable to translate a rotational drive movement to cause relative axial movement of the first and second impact surfaces to establish axial impact therebetween.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: May 7, 2019
    Assignee: Rotojar Limited
    Inventor: Peter Barnes Moyes
  • Jarring Apparatus
    Publication number: 20190071945
    Abstract: A downhole jarring apparatus for use in jarring an object in a bore comprises a first jarring portion including a first impact surface and a second jarring portion including a second impact surface. The apparatus includes a rotatable jarring arrangement operable to translate a rotational drive movement to cause relative axial movement of the first and second impact surfaces to establish axial impact therebetween.
    Type: Application
    Filed: November 5, 2018
    Publication date: March 7, 2019
    Applicant: Rotojar Limited
    Inventor: Peter Barnes Moyes