Patents by Inventor Mark Lewan

Mark Lewan 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).

  • Vision-based rotary part offset correction for weld toolpathing
    Patent number: 12179284
    Abstract: An improved laser weld process control system and method are provided. The system and method include a machine vision camera to detect a deviation between a pre-programmed laser beam toolpath and a gap centerpoint between first and second parts being welded together. The first and second parts are secured to a rotatable fixture, and the system and method cause the rotatable fixture to rotate through a corrective angle to bring the gap centerpoint into alignment with the laser beam toolpath, optionally in real time during the application of laser beam energy. The system and method can also correct for a vertical misalignment of the laser focal point due to rotation of the fixture by adjusting the vertical separation of the laser unit relative to the fixture.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: December 31, 2024
    Assignee: DM3D Technology, LLC
    Inventors: Vijayavel Bagavath-Singh, Jason Franceschina, Mark Lewan, Bhaskar Dutta
  • VISION-BASED ROTARY PART OFFSET CORRECTION FOR WELD TOOLPATHING
    Publication number: 20220063018
    Abstract: An improved laser weld process control system and method are provided. The system and method include a machine vision camera to detect a deviation between a pre-programmed laser beam toolpath and a gap centerpoint between first and second parts being welded together. The first and second parts are secured to a rotatable fixture, and the system and method cause the rotatable fixture to rotate through a corrective angle to bring the gap centerpoint into alignment with the laser beam toolpath, optionally in real time during the application of laser beam energy. The system and method can also correct for a vertical misalignment of the laser focal point due to rotation of the fixture by adjusting the vertical separation of the laser unit relative to the fixture.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Vijayavel Bagavath-Singh, Jason Franceschina, Mark Lewan, Bhaskar Dutta