Patents by Inventor Tomomichi YASUOKA

Tomomichi YASUOKA 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).

  • Publication number: 20210178514
    Abstract: A welding method includes: emitting laser beam toward a workpiece including a metal to melt and weld a part of the workpiece, the part being where the laser beam has been emitted to. Further, the laser beam includes a main power region and at least one auxiliary power region, a power of the main power region is larger than a power of each of the at least one auxiliary power region, and a ratio between the power of the main power region and the total of powers of the at least one auxiliary power region is in a range of 144:1 to 1:9.
    Type: Application
    Filed: February 24, 2021
    Publication date: June 17, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Ryosuke NISHII, Koji KIRIKAE, Keigo MATSUNAGA, Takashi SHIGEMATSU
  • Publication number: 20210170527
    Abstract: A welding method includes a step of, while irradiating laser beam toward a workpiece, relatively moving the laser beam and the workpiece and, while sweeping the laser beam on the workpiece, melting the workpiece in an irradiated portion to perform welding. Further, the laser beam is configured by a main power region and a sub-power region, at least a part of the sub-power region is present on a sweeping direction side of the main power region, a power density of the main power region is equal to or higher than a power density of the sub-power region, and the power density of the main power region is at least power density that can generate a keyhole.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Toshiaki SAKAI, Ryosuke NISHII, Takashi SHIGEMATSU
  • Publication number: 20210162539
    Abstract: A welding method includes: layering two or more plate materials each including a plating plate material having a preform on a surface of which a plating layer is formed to form a workpiece; disposing the workpiece in a region to be irradiated with a processing laser beam; generating the processing laser beam having a power distribution shape in which two or more power regions are disposed along a predetermined direction in a plane perpendicular to a light traveling direction; irradiating a surface of the workpiece with the processing laser beam; and moving the processing laser beam and the workpiece relatively while performing the irradiation, and melting an irradiated area of the workpiece to perform welding while sweeping the processing laser beam in the predetermined direction on the workpiece during a swing of the processing laser beam.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 3, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takashi KAYAHARA, Ryosuke NISHII, Satoshi ASANUMA, Tomomichi YASUOKA, Takashi SHIGEMATSU
  • Publication number: 20210086295
    Abstract: A welding method includes: disposing a workpiece formed by stacking a plurality of metal foils in an area to be irradiated with laser light that contains a plurality of beams; irradiating a surface of the workpiece with the beams of the laser light by dispersing positions of the beams such that centers of the beams do not overlap with each other within a prescribed area on the surface; melting an irradiated part of the workpiece and performing welding; and setting each of the beams to have a power density with which no hole opens in the metal foils, and setting the power density of the beams and dispersing irradiating positions to be emitted so as to form a weld pool penetrating the workpiece by the beams.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Ryosuke NISHII, Kousuke KASHIWAGI, Takashi KAYAHARA, Tomomichi YASUOKA, Takashi SHIGEMATSU
  • Publication number: 20210031301
    Abstract: A welding method includes: arranging a workpiece containing copper in a region to be irradiated with laser light; and irradiating the workpiece with the laser light to melt and weld an irradiated portion of the workpiece. Further, the laser light is formed of a main beam and a plurality of sub beams, and a ratio of power of the main beam to total power of the plurality of sub beams is 72:1 to 3:7.
    Type: Application
    Filed: October 9, 2020
    Publication date: February 4, 2021
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Toshiaki SAKAI, Ryosuke NISHII, Takashi SHIGEMATSU
  • Publication number: 20200384574
    Abstract: A welding method includes: forming a workpiece by stacking plated sheet members having a plating layer formed on a surface of a base material; disposing the workpiece in an area to be irradiated with laser light; irradiating a surface of the workpiece with a plurality of beams by dispersing positions such that centers of the beams do not overlap with each other within a prescribed area on the surface; while continuing the irradiation, relatively moving the beams and the workpiece and sweeping the beams on the workpiece so as to melt an irradiated part of the workpiece for performing welding; and setting a distance between the beams to be emitted such that weld pools formed in the workpiece by irradiation of each of the beams overlap with each other.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 10, 2020
    Applicant: FURUKAWA ELECTRONIC CO, LTD.
    Inventors: Ryosuke NISHII, Takashi KAYAHARA, Toshiaki SAKAI, Tomomichi YASUOKA, Takashi SHIGEMATSU
  • Publication number: 20190389001
    Abstract: A method of welding a workpiece by using a laser is provided which includes disposing a workpiece in a region to be irradiated with laser light from a laser oscillator; and irradiating the workpiece with the laser light from the laser oscillator such that an irradiated portion of the workpiece is melted and welded while sweeping the laser light over the workpiece by relatively moving the laser light and the workpiece. The laser light is formed of a main beam and an auxiliary beam, at least part of the auxiliary beam being disposed anteriorly in a sweep direction, and the main beam has a power density equal to or greater than a power density of the auxiliary beam.
    Type: Application
    Filed: September 3, 2019
    Publication date: December 26, 2019
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Tomomichi YASUOKA, Takashi KAYAHARA, Toshiaki SAKAI, Ryosuke NISHII, Takashi SHIGEMATSU