Patents by Inventor Brett Lestrange

Brett Lestrange 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).

  • Flowmeter apparatus
    Patent number: 6874374
    Abstract: A flowmeter is described which has a retrievable housing conduit which is locatable within a conduit or pipe and which seals against the pipe so that fluid only flows through the housing conduit, and a flow restriction is created within the housing conduit to create a Venturi when in use. At least two spaced pressure measuring stations are provided along the housing conduit, one of the stations located at an unrestricted flow location, the other at a restricted flow location, whereby pressures measured at these stations can be used to calculate fluid flow rates. Embodiments of the invention are described.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: April 5, 2005
    Assignee: Expro North Sea Limited
    Inventors: Andrew Richards, Brett Lestrange
  • Flowmeter apparatus
    Publication number: 20040031330
    Abstract: A flowmeter is described which has a retrievable housing conduit which is locatable within a conduit or pipe and which seals against the pipe so that fluid only flows through the housing conduit, and a flow restriction is created within the housing conduit to create a Venturi when in use. At least two spaced pressure measuring stations are provided along the housing conduit, one of the stations located at an unrestricted flow location, the other at a restricted flow location, whereby pressures measured at these stations can be used to calculate fluid flow rates. Embodiments of the invention are described.
    Type: Application
    Filed: June 30, 2003
    Publication date: February 19, 2004
    Inventors: Andrew Richards, Brett Lestrange
  • Flow monitoring apparatus
    Publication number: 20030019301
    Abstract: A flowmeter is described which has a retrievable housing conduit which is locatable within a conduit or pipe and which seals against the pipe so that fluid only flows through the housing conduit, and a flow restriction is created within the housing conduit to create a Venturi when in use. At least two spaced pressure measuring stations are provided along the housing conduit, one of the stations located at an unrestricted flow location, the other at a restricted flow location, whereby pressures measured at these stations can be used to calculate fluid flow rates. Embodiments of the invention are described.
    Type: Application
    Filed: September 21, 2001
    Publication date: January 30, 2003
    Inventors: Andrew Richards, Brett Lestrange