Patents by Inventor Henrik Dahlgren

Henrik Dahlgren 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).

  • Nozzle for high or medium voltage circuit breaker
    Patent number: 11515110
    Abstract: A gas-insulated high or medium voltage circuit breaker comprising: a first arcing contact and a second arcing contact, wherein at least one of the two arcing contact is axially movable along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in a arcing region; a buffer housing defining a pressurizing volume; a nozzle arranged at a nozzle side of the pressurizing volume, the nozzle defining a channel connected to the pressurizing volume and directed to the arcing region, for blowing an arc extinguishing gas towards the arcing region during the breaking operation, the nozzle comprising a nozzle front face facing towards the interior of the pressurizing volume.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: November 29, 2022
    Assignee: Hitachi Energy Switzerland AG
    Inventors: Jakub Korbel, Olaf Hunger, Reto Karrer, Henrik Dahlgren, Alexey Sokolov, Giang PhamVan
  • NOZZLE FOR HIGH OR MEDIUM VOLTAGE CIRCUIT BREAKER
    Publication number: 20210265122
    Abstract: A gas-insulated high or medium voltage circuit breaker comprising: a first arcing contact and a second arcing contact, wherein at least one of the two arcing contact is axially movable along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in a arcing region; a buffer housing defining a pressurizing volume; a nozzle arranged at a nozzle side of the pressurizing volume, the nozzle defining a channel connected to the pressurizing volume and directed to the arcing region, for blowing an arc extinguishing gas towards the arcing region during the breaking operation, the nozzle comprising a nozzle front face facing towards the interior of the pressurizing volume.
    Type: Application
    Filed: August 28, 2019
    Publication date: August 26, 2021
    Inventors: Jakub Korbel, Olaf Hunger, Reto Karrer, Henrik Dahlgren, Alexey Sokolov, Giang PhamVan