Patents by Inventor Nobushiro Seo

Nobushiro Seo 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: 20210276120
    Abstract: The present invention includes: a preparation step in which a stepped portion including step bottom and step side surfaces is formed along an inner circumferential edge of a jacket body; a placing step in which a sealing body is placed on the jacket body forming first and second butted sections; and a main joining step in which friction stir welding is performed by moving a rotary tool along the first butted section, while only a stirring pin of the rotary tool is in contact with only the sealing body. During friction stir welding, a central axis of rotation of the rotary tool is tilted towards a central side of the jacket body so that the angle of tilt with respect to the step side surface is equal to the angle of inclination of an outer circumferential surface of the stirring pin with respect to the central axis of rotation.
    Type: Application
    Filed: November 20, 2017
    Publication date: September 9, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO
  • Publication number: 20210268599
    Abstract: The present invention is characterized by including a primary joining process to perform friction stirring to a first butted portion by moving a stirring pin one round around a sealing body with a predetermined depth along a set moving route set at an inner position relative to an outer peripheral side face in a state that only the stirring pin of a rotary tool being rotated is inserted into the sealing body and that an outer face of the stirring pin is slightly in contact with a step side face of a peripheral wall step portion. In the primary joining process, after only the stirring pin being rotated is inserted into a starting position set at a position on an inner side relative to the set moving route, the stirring pin is gradually inserted to the predetermined depth while an axis of the rotary tool is moved to a position on the set moving route.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 2, 2021
    Applicant: Nippon Light Metal Company, Ltd.
    Inventors: Nobushiro SEO, Hisashi HORI
  • Publication number: 20210213561
    Abstract: The present invention is characterized by including a heat medium pipe insertion process to insert a heat medium pipe into a concave groove; a lid plate insertion process to insert a lid plate into a lid groove; and a joining process to perform friction stirring while a primary joining rotary tool provided with a base side pin and a tip side pin is moved along a butted portion of a side wall of the lid groove and a side face of the lid plate, wherein in the joining process, friction stirring is performed while the tip side pin of the primary rotary tool which is rotating is inserted into the butted portion and an outer circumferential face of the base side pin is in contact with the base member and the lid plate, and plastically fluidized material fluidized by frictional heat is flowed into a void portion formed adjacent to the heat medium pipe.
    Type: Application
    Filed: May 7, 2019
    Publication date: July 15, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20210170521
    Abstract: A primary joining rotary tool F comprises a stirring pin F2including a circumferential face tapers to become thinner toward a tip portion of the stirring pin, a flat face F3 at the tip portion of the stirring pin F2 and a projecting portion F4 projecting from the flat face F3. Friction-stirring is performed in the primary joining process by inserting the stirring pin F2 that is rotating into an abutted portion J1 in a manner that only the stirring pin F2 is in contact with the base member 2 and the lid plate 5 with the flat face F3 being in contact with the base member 2 and the lid plate 5 and with a tip face F5 of the projecting portion F4 being in contact only with the base member 2.
    Type: Application
    Filed: January 17, 2019
    Publication date: June 10, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO
  • Publication number: 20210146474
    Abstract: The method comprises a primary joining process in which primary joining is performed by friction stirring by moving a rotary tool (F) once around a recessed part (13) along a first overlap part (H1) in a state where only a stirring pin (F2) of the rotary tool provided with the stirring pin is inserted in the first overlap part (H1) from a front surface (3b) of a sealing body (3) and is in contact with a jacket body (2) and the sealing body (3). In the primary joining process, the rotary tool (F), which is provided with a flat surface (F4) orthogonal to a rotational axis of the stirring pin (F2) and a projection (F5) projecting from the flat surface (F4) at a tip part of the stirring pin (F2), is employed, and the first overlap part (H1) is joined by bringing the flat surface (F4) into contact with only the sealing body (3) and inserting a tip end of the projection (F5) more deeply than the first overlap part (H1).
    Type: Application
    Filed: November 16, 2017
    Publication date: May 20, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO
  • Publication number: 20210146473
    Abstract: Provided is a method for manufacturing a liquid-cooled jacket, to reduce the size of a recessed groove on a surface of a metal member and also to reduce roughness of an abutted surface. The method includes: a placing step of placing a jacket body and a sealing body, a first main joining step of performing friction stirring by moving a main joining rotary tool around along a first abutted portion, and a second main joining step of performing friction stirring by moving the main joining rotary tool around along a second abutted portion. The main joining rotary tool has a base-end-side pin and a tip-end-side pin. A taper angle of the base-end-side pin is grater than a taper angle of the tip-end-side pin and a stairs-like pin step portion is formed on an outer circumferential surface of the tip-end-side pin.
    Type: Application
    Filed: July 20, 2018
    Publication date: May 20, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20210053144
    Abstract: A liquid cooling jacket is produced by forming a first butted portion where a step side face of a peripheral wall portion and an outer peripheral side face of a sealing body butt each other and a third butted portion where a step side face of a support pillar portion and a hole wall of the hole portion of the sealing body portion butt each other with a gap, and friction-stirring by inserting a tip side pin and a base side pin of a primary joining rotary tool that is rotating into the sealing body and moving the primary joining rotary tool along the third butted portion with an outer circumferential face of the tip side pin being kept off the step side face while having a second aluminum alloy of the sealing body flow into the gap.
    Type: Application
    Filed: September 27, 2018
    Publication date: February 25, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Patent number: 10906127
    Abstract: A friction stir welding method is provided that can prevent defective welding due to a shortage of metal. The friction stir welding method welds metal members (1, 2) using a primary joining rotary tool (F) having a stirring pin (F2), and includes steps of: butting in which the metal members (1, 2) are butted with each other at an angle to form a butted portion (J1); buildup welding in which buildup welding is applied along an inner corner of the metal members (1, 2) formed in the butting step to cover the inner corner by a weld metal (M); and inner corner joining in which only the stirring pin (F2) in rotation is inserted in the inner corner to plastically fluidize the weld metal (M) and the metal members (1, 2) for friction stir welding of the butted portion (J1).
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: February 2, 2021
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Nobushiro Seo, Hisashi Hori
  • Publication number: 20200359523
    Abstract: A method for manufacturing a liquid-cooling jacket (1) where heat transfer fluid flows in a hollow part (14) defined by a jacket body (2) and a sealing body (3) includes: an overlapping process in which the sealing body (3) is placed on an end surface (11a) of a peripheral wall part (11) in such a way that the end surface (11a) and a back surface of the sealing body (3) are overlapped each other to form a first overlapped part (H1); and a primary joining process in which primary joining is performed by friction stirring in such a way that a rotary tool (F1) is moved once around a recessed part (13) along the first overlapped part (H1). In the primary joining process, the first overlapped part (H1) is joined in a state where the tip side pin is in contact with only the sealing body (3) or with the jacket body (2) and the sealing body (3) while the base side pin is in contact with the sealing body (3).
    Type: Application
    Filed: May 16, 2018
    Publication date: November 12, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20200353557
    Abstract: A method for manufacturing a liquid-cooling jacket (1) where heat transfer fluid flows in a hollow part (14) defined by a jacket body (2) and a sealing body (3) includes: an overlapping process in which the sealing body (3) is placed on an end surface (11a) of a peripheral wall part (11) in such a way that the end surface (11a) and a back surface of the sealing body (3) are overlapped each other to form a first overlapped part (H1); and a primary joining process in which primary joining is performed by friction stirring in such a way that a rotary tool (FD) is moved once around a recessed part (13) along the first overlapped part (H1).
    Type: Application
    Filed: May 16, 2018
    Publication date: November 12, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20200353558
    Abstract: Provided is a method for manufacturing a liquid cooling jacket including a jacket body and a sealing body joined to the jacket body. The method includes steps of: preparing; placing; first primary joining with a rotary tool; and second primary joining with the rotary tool. A rotary tool includes a base end pin and a distal end pin. The distal end pin includes a flat surface and a protrusion extending from the flat surface. In the first primary joining and the second primary joining, friction stirring is performed in a state where a front surface of the sealing body is brought in contact with an outer peripheral surface of the base end pin, the sealing body is brought in contact with the flat surface of the distal end pin, and the jacket body is brought in contact with the protrusion.
    Type: Application
    Filed: August 1, 2018
    Publication date: November 12, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Patent number: 10807188
    Abstract: A method of manufacturing a liquid-cooled jacket, includes a preparation step which includes placing a sealing body on a stepped portion to allow a step side surface and a sealing-body side surface of the sealing body to butt each other, and a primary joining step which includes allowing a primary joining rotary tool to move once around the sealing body, while moving the rotary tool along a butted portion formed in the preparation step, to carry out friction stir welding. The primary joining step includes employing the primary joining rotary tool provided with a stirring pin having a length dimension greater than a thickness dimension of the sealing body, and carrying out friction stirring with only the stirring pin being brought into contact with a jacket body and the sealing body.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: October 20, 2020
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi Hori, Nobushiro Seo
  • Publication number: 20200324365
    Abstract: A method for manufacturing a liquid cooling jacket has a feature of using a primary joining rotary tool provided with a tip side pin and a base side pin having a taper angle larger than a taper angle of the tip side pin and comprising a first primary joining process in which inserting the tip side pin and the base side pin of the rotary tool that is rotating into the sealing body member and moving the rotary tool along the first abutted portion with an outer circumferential face of the base side pin being in contact with a front face of the sealing body member and with the outer circumferential face of the tip side pin being kept off a step side face of the peripheral wall step portion while having a second aluminum alloy of the sealing body member flow into the gap.
    Type: Application
    Filed: September 27, 2018
    Publication date: October 15, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20200282489
    Abstract: A heat transfer plate manufacturing method in which a tip end-side pin of a rotation tool, as rotating, is inserted into a butt part, and friction stirring is performed with an outer peripheral surface of a base end-side pin in contact with a front surfaces of a base member and a lid plate, with the base end-side pin and a flat surface in contact with the base member and the lid plate, and with a tip end surface of a protrusion part in contact with only the base member, is provided.
    Type: Application
    Filed: May 15, 2018
    Publication date: September 10, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20200254556
    Abstract: Provided is a method for manufacturing a liquid cooling jacket including a jacket body and a sealing body joined to the jacket body. The method includes steps of: preparing; placing; first primary joining with a rotary tool; and second primary joining with the rotary tool. The rotary tool includes a base end pin and a distal end pin. The distal end pin includes a flat surface and a protrusion protruding from the flat surface. In the first primary joining and the second primary joining, friction stirring is performed in a state where the jacket body and the sealing body are brought in contact with the flat surface of the distal end pin and the base end pin and only the jacket body is brought in contact with a distal end surface of the protrusion.
    Type: Application
    Filed: August 16, 2018
    Publication date: August 13, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Patent number: 10668559
    Abstract: A joining method includes abutting an end face of a first metal member in a plate shape having a projecting part on the end face on a rear face of a second metal member in a plate shape having a hole that is bored through the second metal member in a plate thickness direction and simultaneously inserting the projecting part into the hole. The method includes inserting a stirring pin of a rotary tool into an abutment portion of a wall of the hole and an outer peripheral surface of the projecting part from a front face side opposite to the rear face of the second metal member. The rotary tool is moved along the abutment portion to join the abutment portion by friction stirring. The abutment portion is joined together with only the stirring pin of the rotary tool being in contact with the first and second metal members.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: June 2, 2020
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi Hori, Nobushiro Seo
  • Publication number: 20200164462
    Abstract: Provided is a method for manufacturing a liquid-cooled jacket, to reduce the size of a recessed groove on a surface of a metal member and also to reduce roughness of a jointed surface. The method includes: a placing step of placing a sealing body on a jacket body, a first main joining step of performing friction stirring by moving a main joining rotary tool around to a first overlapped portion, and a second main joining step of performing friction stirring to a second overlapped portion. The main joining rotary tool has a base-end-side pin and a tip-end-side pin. A taper angle of the base-end-side pin is greater than a taper angle of the tip-end-side pin and a stairs-like pin step portion is formed on an outer circumferential surface of the base-end-side pin.
    Type: Application
    Filed: July 20, 2018
    Publication date: May 28, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20200147718
    Abstract: The present invention includes a preparation step in which a stepped portion including step bottom and step side surfaces is formed along an edge of a jacket body, a placing step in which a sealing body is placed on the jacket body forming first and second butted sections, and a main joining step in which friction stir welding (FSW) is performed by moving a rotary tool along the first butted section with only a stirring pin of the rotary tool in contact with only the sealing body. During FSW, a central axis of rotation of the rotary tool is tilted towards a central or peripheral side of the jacket body so that the angle of tilt relative to a vertical plane equals the angle the stirring pin's outer circumferential surface makes with the central axis of rotation subtracted by the angle the step side surface makes with a vertical plane.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 14, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO
  • Publication number: 20200078883
    Abstract: Provided is a joining method that can prevent a plastic flowing material from flowing out from a butt section and that can reduce the thickness and weight of metal members. The joining method is for joining a first metal member and a second metal member by using a rotary tool comprising a stirring pin, and is characterized in that: the stirring pin comprises a flat surface perpendicular to the rotation axis of the rotary tool and comprises a protruding section protruding from the flat face; and in a friction stirring step, the flat surface is brought into contact with the first metal member and the second metal member, and a front end face of the protruding section is inserted deeper than an upper overlapping section to join an upper front butt section and the upper overlapping section.
    Type: Application
    Filed: October 12, 2017
    Publication date: March 12, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Nobushiro SEO, Hisahi HORI
  • Patent number: 10518369
    Abstract: Certain embodiments relate to a heat exchanger plate capable of performing friction stir welding at a deep position of the heat exchanger plate, and improving air-tightness and water-tightness. A method may include a lid groove closing process to insert a lid plate into a lid groove formed at a periphery of a concave groove opening to a surface of a base member. The method may also include a primary joining process to perform friction stirring while relatively moving a primary joining rotary tool equipped with a stirring pin along a butting portion of a side wall of the lid groove and a side surface of the lid plate. In the primary joining process, the rotating stirring pin may be inserted into the butting portion, and the friction stirring may be performed in a state of only the stirring pin being in contact with the base member and the lid plate.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: December 31, 2019
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi Hori, Nobushiro Seo