Patents by Inventor Andrew Macdonald Carmichael

Andrew Macdonald Carmichael 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).

  • Landing string retainer system
    Patent number: 11131166
    Abstract: A retainer system, device and method are provided for retaining a severed pipe string such as a landing string suspended from a rig of a floating vessel or platform during a failure of a primary or secondary heave compensation system and prevent the severed pipe string from flying over the rig floor. The retainer system includes a retainer device including a housing mounted to a platform or vessel, the housing defining a through bore for receiving a pipe string suspended from the platform or vessel. A safety sleeve extends through the housing. A stop arrangement is mountable on the pipe string, to permit engagement between the safety sleeve and the stop arrangement in order to limit relative movement between the housing and the pipe string in order to retain a severed pipe string in an emergency situation.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: September 28, 2021
    Assignee: Expro North Sea Limited
    Inventors: Stephen George Minty, Andrew Macdonald Carmichael
  • LANDING STRING RETAINER SYSTEM
    Publication number: 20170247985
    Abstract: A retainer system, device and method are provided for retaining a severed pipe string such as a landing string suspended from a rig of a floating vessel or platform during a failure of a primary or secondary heave compensation system and prevent the severed pipe string from flying over the rig floor. The retainer system includes a retainer device including a housing mounted to a platform or vessel, the housing defining a through bore for receiving a pipe string suspended from the platform or vessel. A safety sleeve extends through the housing. A stop arrangement is mountable on the pipe string, to permit engagement between the safety sleeve and the stop arrangement in order to limit relative movement between the housing and the pipe string in order to retain a severed pipe string in an emergency situation.
    Type: Application
    Filed: October 16, 2015
    Publication date: August 31, 2017
    Inventors: Stephen George Minty, Andrew Macdonald Carmichael