Patents by Inventor Ulf Nicklas Andrén

Ulf Nicklas Andrén 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).

  • Stopping an electroslag welding process
    Patent number: 11801569
    Abstract: Stopping electroslag strip cladding operations feeding multiple strips includes detecting, during a welding phase of an electroslag welding operation feeding a first strip and a second strip towards a molten slag pool formed on a work piece, initiation of a stop phase. Upon detection the feeding of the first strip towards the molten slag pool is stopped. Additionally, a feed direction of the feeding of the second strip is reversed to retract the second strip away from the molten slag pool.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: October 31, 2023
    Assignee: ESAB AB
    Inventors: Hannes Hugo Raudsepp, Ulf Nicklas Andrén
  • STOPPING AN ELECTROSLAG WELDING PROCESS
    Publication number: 20190001432
    Abstract: Stopping electroslag strip cladding operations feeding multiple strips includes detecting, during a welding phase of an electroslag welding operation feeding a first strip and a second strip towards a molten slag pool formed on a work piece, initiation of a stop phase. Upon detection the feeding of the first strip towards the molten slag pool is stopped. Additionally, a feed direction of the feeding of the second strip is reversed to retract the second strip away from the molten slag pool.
    Type: Application
    Filed: June 28, 2017
    Publication date: January 3, 2019
    Inventors: Hannes Hugo Raudsepp, Ulf Nicklas Andrén
  • FEED SPEED REGULATION FOR ELECTROSLAG WELDING WITH MULTIPLE STRIPS
    Publication number: 20180361496
    Abstract: Regulating the feed speed of multiple strips during electroslag strip cladding includes guiding a first strip and a second strip towards a work piece. A current is transferred to at least one of the first strip and the second strip to create a molten slag pool on the work piece sufficient for initiation of a cladding phase. A welding parameter associated with the cladding phase is measured and the first strip is fed towards the molten slag pool at a first variable feed speed based on the measuring of the welding parameter. The second strip is fed towards the molten slag pool at a second variable feed speed that is different from the first variable speed, but dynamically determined based on the first variable feed speed.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 20, 2018
    Inventors: Hannes Hugo Raudsepp, Ulf Nicklas Andrén