Patents by Inventor Wesley John KELLER

Wesley John KELLER 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).

  • Laser drilling and machining enhancement using gated CW and short pulsed lasers
    Patent number: 11712750
    Abstract: The present disclosure relates to a laser system for processing a material. The system may make use of a laser configured to intermittently generate a first laser pulse of a first duration and a first average power, at a spot on a surface of the material being processed, and a second laser pulse having a second duration and a second peak power. The second duration may be shorter than the first duration by a factor of at least 100, and directed at the spot. The second laser pulse is generated after the first laser pulse is generated. The first laser pulse is used to heat the spot on the surface of the material, while the second laser pulse induces a melt motion and material ejection of molten material from the melt pool.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 1, 2023
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Sonny S. Ly, Jeffrey D. Bude, Gabriel Mark Guss, Wesley John Keller, Raluca A. Negres, Alexander M. Rubenchik, Nan Shen
  • SYSTEM AND METHOD FOR ENHANCEMENT OF LASER MATERIAL PROCESSING VIA MODULATION OF LASER LIGHT INTENSITY
    Publication number: 20210023658
    Abstract: The present disclosure relates to a laser-based system and method for providing efficient melt removal of material from a surface of a material sample being acted on in a laser machining operation. In one implementation the system may make use of a continuous wave (CW) laser for generating a laser beam directed at a spot on the surface of the material sample. The CW laser may be configured to be modulated at a predetermined frequency such that the laser beam excites and amplifies surface capillary waves on the surface of the sample up to a melt ejection point, which ejects molten material from the spot being acted on by the laser beam, to more rapidly facilitate material removal from the spot.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 28, 2021
    Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Sonny S. LY, Jeffrey D. BUDE, Gabriel Mark GUSS, Wesley John KELLER, Raluca A. NEGRES, Alexander M. RUBENCHIK, Nan SHEN
  • LASER DRILLING AND MACHINING ENHANCEMENT USING GATED CW AND SHORT PULSED LASERS
    Publication number: 20210001427
    Abstract: The present disclosure relates to a laser system for processing a material. The system may make use of a laser configured to intermittently generate a first laser pulse of a first duration and a first average power, at a spot on a surface of the material being processed, and a second laser pulse having a second duration and a second peak power. The second duration may be shorter than the first duration by a factor of at least 100, and directed at the spot. The second laser pulse is generated after the first laser pulse is generated. The first laser pulse is used to heat the spot on the surface of the material, while the second laser pulse induces a melt motion and material ejection of molten material from the melt pool.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 7, 2021
    Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Sonny S. LY, Jeffrey D. BUDE, Gabriel Mark GUSS, Wesley John KELLER, Raluca A. NEGRES, Alexander M. RUBENCHIK, Nan SHEN