Patents by Inventor Ronaldus R. M. Roling

Ronaldus R. M. Roling 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).

  • Pipe running tool having a cement path
    Patent number: 7510006
    Abstract: An oil and gas well drilling system is provided that includes a top drive assembly having an output shaft; and a pipe running tool having a top drive extension shaft connected to the top drive output shaft and engageable with a pipe string to transmit translational and rotational forces from the top drive assembly to the pipe string, wherein the pipe running tool further includes a cementing pipe connected to the top drive extension shaft and having a fluid passageway which receives cement during a cementing operation.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: March 31, 2009
    Assignee: Varco I/P, Inc.
    Inventors: Daniel Juhasz, George Boyadjieff, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Hans Joachim Dietrich Böttger, Gustaaf Louis van Wechem, David Mason, Ronaldus R. M. Roling
  • Non-seize material attachment for a drill slip system
    Patent number: 6915857
    Abstract: An oil or gas well slip system is provided that includes a first movable member having an interactive contact surface and a second movable member having a mating interactive contact surface for slidable engagement with the interactive contact surface of the first movable member. The first and second movable members are each comprised of a first material. A second material, compositionally different from the first material, is attached to the interactive contact surface of either the first or the second movable member.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: July 12, 2005
    Assignee: Varco I/P. Inc.
    Inventors: Johannes Wilhelmus Henricus van Rijzingen, Ronaldus R. M. Roling, David B. Mason
  • Non-seize material attachment for a drill slip system
    Publication number: 20040188097
    Abstract: An oil or gas well slip system is provided that includes a first movable member having an interactive contact surface and a second movable member having a mating interactive contact surface for slidable engagement with the interactive contact surface of the first movable member. The first and second movable members are each comprised of a first material. A second material, compositionally different from the first material, is attached to the interactive contact surface of either the first or the second movable member.
    Type: Application
    Filed: March 30, 2004
    Publication date: September 30, 2004
    Inventors: Johannes Wilhelmus Henricus van Rijzingen, Ronaldus R. M. Roling, David B. Mason