Patents by Inventor Steven Alistair Ledingham

Steven Alistair Ledingham 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).

  • High pressure regulation for a ball valve
    Patent number: 10724335
    Abstract: In accordance with some embodiments of the present disclosure, a high pressure regulation system for a ball valve used in a wellbore is disclosed. The high pressure ball valve includes an outer wall, an inner wall disposed in the outer wall, a tubing defined by an inner diameter of the inner wall, an annulus defined by an outer diameter of the inner wall and an inner diameter of the outer wall, a lower chamber formed in the annulus, and a relief valve fluidically coupled to the lower chamber. The relief valve is to control a pressure differential between a pressure in the lower chamber and a pressure in the tubing.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: July 28, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Steven Alistair Ledingham, Peter D W Inglis, Rory Archibald Napier
  • HIGH PRESSURE REGULATION FOR A BALL VALVE
    Publication number: 20180187515
    Abstract: In accordance with some embodiments of the present disclosure, a high pressure regulation system for a ball valve used in a wellbore is disclosed. The high pressure ball valve includes an outer wall, an inner wall disposed in the outer wall, a tubing defined by an inner diameter of the inner wall, an annulus defined by an outer diameter of the inner wall and an inner diameter of the outer wall, a lower chamber formed in the annulus, and a relief valve fluidically coupled to the lower chamber. The relief valve is to control a pressure differential between a pressure in the lower chamber and a pressure in the tubing.
    Type: Application
    Filed: July 14, 2015
    Publication date: July 5, 2018
    Inventors: Steven Alistair Ledingham, Peter DW Inglis, Rory Archibald Napier