Patents by Inventor Hallgeir Foss Alsvik

Hallgeir Foss Alsvik 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).

  • Shaft mechanical lock for pipeline isolation tools
    Patent number: 11346485
    Abstract: A mechanical lock unit with a shaft lock assembly and method of achieving a self-lock mode for, e.g., hydraulically activated isolation plug module. The shaft lock assembly includes a teeth-form ring that surrounds a shaft. The teeth-form ring defines a plurality of teeth. A teeth-form split gripper assembly is positioned to surround the teeth-form ring. The teeth-form split gripper assembly has at least a first teeth-form split gripper and a second teeth-form split gripper with a spring therebetween for biasing the first teeth-form split gripper away from said second teeth-form split gripper. The first teeth-form split gripper and the second teeth form split gripper having an inner surface that defines a plurality of teeth for cooperative engagement with the plurality of teeth of the teeth-form ring.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: May 31, 2022
    Assignee: TDW Delaware, Inc.
    Inventors: Khanh Van Nguyen, Hallgeir Foss Alsvik
  • Shaft Mechanical Lock for Pipeline Isolation Tools
    Publication number: 20210071799
    Abstract: A mechanical lock unit with a shaft lock assembly and method of achieving a self-lock mode for, e.g., hydraulically activated isolation plug module. The shaft lock assembly includes a teeth-form ring that surrounds a shaft. The teeth-form ring defines a plurality of teeth. A teeth-form split gripper assembly is positioned to surround the teeth-form ring. The teeth-form split gripper assembly has at least a first teeth-form split gripper and a second teeth-form split gripper with a spring therebetween for biasing the first teeth-form split gripper away from said second teeth-form split gripper. The first teeth-form split gripper and the second teeth form split gripper having an inner surface that defines a plurality of teeth for cooperative engagement with the plurality of teeth of the teeth-form ring.
    Type: Application
    Filed: September 14, 2020
    Publication date: March 11, 2021
    Inventors: Khanh Van Nguyen, Hallgeir Foss Alsvik
  • Shaft mechanical lock for pipeline isolation tools
    Patent number: 10774970
    Abstract: A mechanical lock unit with a shaft lock assembly and method of achieving a self-lock mode for, e.g., hydraulically activated isolation plug module. The shaft lock assembly includes a teeth-form ring that surrounds a shaft. The teeth-form ring defines a plurality of teeth. A teeth-form split gripper assembly is positioned to surround the teeth-form ring. The teeth-form split gripper assembly has at least a first teeth-form split gripper and a second teeth-form split gripper with a spring therebetween for biasing the first teeth-form split gripper away from said second teeth-form split gripper. The first teeth-form split gripper and the second teeth form split gripper having an inner surface that defines a plurality of teeth for cooperative engagement with the plurality of teeth of the teeth-form ring.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: September 15, 2020
    Assignee: TDW Delaware, Inc.
    Inventors: Khanh Van Nguyen, Hallgeir Foss Alsvik
  • Shaft Mechanical Lock For Pipeline Isolation Tools
    Publication number: 20200124222
    Abstract: A mechanical lock unit with a shaft lock assembly and method of achieving a self-lock mode for, e.g., hydraulically activated isolation plug module. The shaft lock assembly includes a teeth-form ring that surrounds a shaft. The teeth-form ring defines a plurality of teeth. A teeth-form split gripper assembly is positioned to surround the teeth-form ring. The teeth-form split gripper assembly has at least a first teeth-form split gripper and a second teeth-form split gripper with a spring therebetween for biasing the first teeth-form split gripper away from said second teeth-form split gripper. The first teeth-form split gripper and the second teeth form split gripper having an inner surface that defines a plurality of teeth for cooperative engagement with the plurality of teeth of the teeth-form ring.
    Type: Application
    Filed: October 17, 2018
    Publication date: April 23, 2020
    Inventors: Khanh Van Nguyen, Hallgeir Foss Alsvik