Patents Assigned to COLT PETROLEUM TECHNOLOGY, INC.
  • Patent number: 11274521
    Abstract: In an embodiment is provided a valve that includes a housing, a mandrel connected to the housing and defining an interior volume therebetween, a sleeve having a first end and a second end, the sleeve movably disposed in the interior volume, a chamber defined in the interior volume, the chamber having a first end and a second end, an inlet of a metering device coupled to the second end of the chamber, and an outlet of the metering device adjacent to the first end of the sleeve. In another embodiment is provided a method of using a valve that includes introducing pressure to a central bore of the valve such that a sleeve of the valve moves from a closed, locked position to a test position. The closed, locked position and the test position do not permit fluid communication between a central bore and an exterior of the valve.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: March 15, 2022
    Assignee: COLT PETROLEUM TECHNOLOGY, INC.
    Inventors: Henry Joe Jordan, Jr., Barbara Jan Bailey, Charles David Wintill