Patents by Inventor Keith Roderick Evans

Keith Roderick Evans 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).

  • Making connections to pipes under pressure
    Patent number: 7441993
    Abstract: Methods and apparatus for making connections to pipes and pressure vessels while they are under pressure employs a first drive mechanism for delivering a cutting tool to the pipe or vessel wall and a second separate drive mechanism for powering the movement of the cutting tool through the wall. The long linear travel associated with the transit of the cutter to the wall is divorced from the short cutter travel required to perform the actual cuffing operation. This allows the two long and short travel systems to be designed independently of one another, and engineering compromises between them can be avoided.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: October 28, 2008
    Assignee: Clear Well Subsea Limited
    Inventor: Keith Roderick Evans
  • Making connections to pipes under pressure
    Publication number: 20040120779
    Abstract: This application describes methods and apparatus for making connections to pipes and pressure vessels while they are under pressure. The invention provides a first drive mechanism for delivering a cutting tool to the vessel wall and a second separate drive mechanism for powering the movement of the cutting tool through the wall. The long linear travel associated with the transit of the cutter to the wall is divorced from the short cutter travel required to perform the actual cutting operation. This allows the two long and short travel systems to be designed independently of one another, and engineering compromises between them can be avoided.
    Type: Application
    Filed: October 30, 2003
    Publication date: June 24, 2004
    Inventor: Keith Roderick Evans