Patents by Inventor Masaru Kiuchi

Masaru Kiuchi 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).

  • Patent number: 11915841
    Abstract: A method of manufacturing a wire harness having an electric wire and a protection tube covering, one end side of the electric wire being provided with a large-dimension portion greater than an inner dimension of the protection tube, including shaping the electric wire protection tube made of shape-memory polymer into a tube shape; expanding the protection tube by heating to a temperature equal to or higher than a glass-transition point such that the inner dimension of the protection tube becomes larger than the large-dimension portion; cooling the protection tube to a temperature below the glass-transition point and solidifying the protection tube; passing the large-dimension portion and the electric wire inside the protection tube; and reheating the electric wire protection tube to a temperature equal to or higher than the glass-transition point such that the electric wire protection tube is restored to the inner dimension obtained after the step of shaping.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: February 27, 2024
    Assignee: YAZAKI CORPORATION
    Inventors: Hirotaka Kiyota, Masaru Kiuchi
  • Patent number: 11791069
    Abstract: A grommet includes a fitting body causing a circumferential edge portion of a through hole provided in a wall body to be fitted into a fitting groove provided in an outer wall, and a first cylinder and a second cylinder causing a harness body to be extracted through the cylinder. The fitting body includes a cylindrical portion, a plurality of ribs rising from an outer circumferential wall surface of the cylindrical portion and disposed on the outer circumferential wall surface at equal intervals in a circumferential direction, and a first support portion and a second support portion provided for each of the ribs. The first support portion and the second support portion project from the outer circumferential wall surface to be high enough to suppress elastic deformation of the rib in the circumferential direction toward the outer circumferential wall surface.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: October 17, 2023
    Assignee: YAZAKI CORPORATION
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda, Junya Kato
  • Patent number: 11742643
    Abstract: A corrugated tube includes a tube body having a tubular shape and configured to accommodate an electric wire inside, and a protection layer laminated on the inner circumferential surface of the tube body. The tube body has a bellows-shaped region having projections and recesses axially alternately continuous, and includes two circumferential ends circumferentially formed, and is circumferentially closed by the two circumferential ends facing each other. The protection layer is laminated in end regions corresponding to the two circumferential ends, respectively, of the inner circumferential surface, and has a hardness lower than the hardness of the tube body.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: August 29, 2023
    Assignee: YAZAKI CORPORATION
    Inventor: Masaru Kiuchi
  • Patent number: 11651876
    Abstract: A grommet applied to a wire harness includes: a body (10) fitted into a through hole and stops water from entering the through hole; and an umbrella-shaped unit including an annular wall section, a first lip section, and a second lip section, the first lip section and the second lip section abutting an abutting target surface in a state in which the body is fitted into the through hole. The first lip section and the second lip section are provided in the annular wall section so as to be located within an installation region of an insulator when viewed along an axial direction. The umbrella-shaped unit includes a stress concentration section that is provided in an annular shape in the annular wall section on a center axis side with respect to the first lip section, and is located within the installation region when viewed along the axial direction.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: May 16, 2023
    Assignee: YAZAKI CORPORATION
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda
  • Patent number: 11538609
    Abstract: A grommet includes a fitting body causing a fitting groove to be fitted to a circumferential edge of a through hole, and a first tubular body and a second tubular body. The fitting body includes a tubular portion, a rib rising from an outer circumferential wall surface of the tubular portion, and a locked portion disposed radially inside the rib, rising from the outer circumferential wall surface, and configured to be locked to an outer circumferential surface of the first tubular body, to suppress elastic deformation of the tubular portion or reduce elastic deformation amount. The rib is elastically deformable in a circumferential direction, and the outer circumferential wall surface has a plurality of projection groups constituted by the locked portion and a plurality of ribs disposed radially outside the locked portion.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: December 27, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda
  • Patent number: 11508499
    Abstract: A grommet includes: a water stop portion that has an annular shape and is inserted to a through hole formed in an attachment panel for stopping water; and a first partition wall portion and a second partition wall portion that are unit arranged to project toward a radially inner side of the water stop portion. The water stop portion includes: a first contact portion that is capable of coming into contact with a first side surface of a circumference edge portion of the through hole; a second contact portion that is capable of coming into contact with the first side surface; a groove portion formed in an annular shape between the first contact portion and the second contact portion; and a recess/protrusion portion that is formed on a circumferential wall inside the groove portion.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: November 22, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda
  • Publication number: 20220262547
    Abstract: A wire harness includes a group of electric wires, an electric wire protection tube covering the plurality of electric wires, and connectors provided at both end sides of the group of electric wires, respectively, and each having a dimension larger than an inner dimension of the electric wire protection tube. The electric wire protection tube is constituted of shape-memory polymer and is mounted on the electric wires while it is expanded to have the inner dimension larger than the outer dimensions of the connectors. After the electric wire protection tube is mounted on the electric wires, the electric wire protection tube is heated to a temperature equal to or higher than a glass-transition point such that it is restored to a shape-memory shape.
    Type: Application
    Filed: January 19, 2022
    Publication date: August 18, 2022
    Applicant: Yazaki Corporation
    Inventors: Hirotaka KIYOTA, Masaru KIUCHI
  • Patent number: 11373785
    Abstract: A grommet includes a fitting body to be fitted in a wall body, a sound insulation wall body that has an annular shape and is in a space part inside of the fitting body, cylinders that are projected from both ends of the fitting body in an axial direction and allow a harness body in the space part to be drawn outward via inside of the cylinders, and an inner cylinder interposed between one cylinder and the harness body, in which the cylinder, having the inner cylinder interposed between the cylinder and the harness body, has a first cylindrical part on a free end side, a second cylindrical part having a diameter larger than a diameter of the first cylindrical part, and an intermediate tubular part between the first cylindrical part and the second cylindrical part. The inner cylinder has a variable cylindrical part.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: June 28, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda
  • Publication number: 20220093293
    Abstract: A grommet applied to a wire harness includes: a body (10) fitted into a through hole and stops water from entering the through hole; and an umbrella-shaped unit including an annular wall section, a first lip section, and a second lip section, the first lip section and the second lip section abutting an abutting target surface in a state in which the body is fitted into the through hole. The first lip section and the second lip section are provided in the annular wall section so as to be located within an installation region of an insulator when viewed along an axial direction. The umbrella-shaped unit includes a stress concentration section that is provided in an annular shape in the annular wall section on a center axis side with respect to the first lip section, and is located within the installation region when viewed along the axial direction.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 24, 2022
    Applicant: Yazaki Corporation
    Inventors: Hirotaka KIYOTA, Masaru KIUCHI, Takeshi ONODA
  • Publication number: 20220032864
    Abstract: A grommet for a wire harness includes: a water sealing portion that is configured to be fitted into and water-seal a through hole; a first tubular portion that is provided on the inner side of the water sealing portion; a first annular wall portion that extends between the water sealing portion and the first tubular portion; a second annular wall portion that faces the first annular wall portion with a first space located between the first annular wall portion and the second annular wall portion, extends from the water sealing portion toward a central axis (C) side; and a first protrusion portion that is provided by protruding toward the first space S1 side from an inner wall surface of the first annular wall portion.
    Type: Application
    Filed: July 15, 2021
    Publication date: February 3, 2022
    Applicant: Yazaki Corporation
    Inventors: Hirotaka KIYOTA, Masaru KIUCHI, Takeshi ONODA
  • Patent number: 11186239
    Abstract: A grommet includes: a main body part fitted to a penetration hole penetrating an attachment panel along an axial direction, stops water at the penetration hole, and has a wiring material inserted thereinto along the axial direction; and a tubular part unified with the main body part so as to have a tubular shape, and has the wiring material inserted thereinto. The tubular part includes a halved part formed to have a shape of a part of the tubular part in a circumferential direction, an open part where an inside of the tubular part is open at a position except a position where the halved part is formed in the circumferential direction, and an open/close part formed continuing from the halved part and is able to open and close the open part.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: November 30, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masaru Kiuchi, Takeshi Onoda
  • Patent number: 11127516
    Abstract: A grommet includes a main body part fitted to a penetration hole penetrating an attachment panel, and a tubular part unified with the main body part so as to have a tubular shape. The tubular part includes a tubular part main body formed continuing from the main body part, and a fold-back part formed continuing from the tubular part main body on a side opposite to a side where the main body part is positioned in the axial direction and that can be folded back to the outside of the tubular part main body. The fold-back part is foldable between an attachment position where the fold-back part is folded back to the outside of the tubular part main body, and a use position where the fold-back part is positioned on the side opposite to the side where the main body part is positioned.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: September 21, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masaru Kiuchi, Hirotaka Kiyota, Takeshi Onoda
  • Publication number: 20210257133
    Abstract: A grommet includes a fitting body causing a circumferential edge portion of a through hole provided in a wall body to be fitted into a fitting groove provided in an outer wall, and a first cylinder and a second cylinder causing a harness body to be extracted through the cylinder. The fitting body includes a cylindrical portion, a plurality of ribs rising from an outer circumferential wall surface of the cylindrical portion and disposed on the outer circumferential wall surface at equal intervals in a circumferential direction, and a first support portion and a second support portion provided for each of the ribs. The first support portion and the second support portion project from the outer circumferential wall surface to be high enough to suppress elastic deformation of the rib in the circumferential direction toward the outer circumferential wall surface.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 19, 2021
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda, Junya Kato
  • Publication number: 20210257132
    Abstract: A grommet includes a fitting body to be fitted in a wall body, a sound insulation wall body that has an annular shape and is in a space part inside of the fitting body, cylinders that are projected from both ends of the fitting body in an axial direction and allow a harness body in the space part to be drawn outward via inside of the cylinders, and an inner cylinder interposed between one cylinder and the harness body, in which the cylinder having the inner cylinder interposed between the cylinder and the harness body has a first cylindrical part on a free end side, a second cylindrical part having a diameter larger than a diameter of the first cylindrical part, and an intermediate tubular part between the first cylindrical part and the second cylindrical part. The inner cylinder has a variable cylindrical part.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 19, 2021
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda
  • Publication number: 20210257131
    Abstract: A grommet includes: a water stop portion that has an annular shape and is inserted to a through hole formed in an attachment panel for stopping water; and a first partition wall portion and a second partition wall portion that are unit arranged to project toward a radially inner side of the water stop portion water stop portion. The water stop portion includes: a first contact portion that is capable of coming into contact with a first side surface of a circumference edge portion of the through hole; a second contact portion that is capable of coming into contact with the first side surface; a groove portion formed in an annular shape between the first contact portion and the second contact portion; and a recess/protrusion portion that is formed on a circumferential wall inside the groove portion.
    Type: Application
    Filed: February 10, 2021
    Publication date: August 19, 2021
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda
  • Publication number: 20210257134
    Abstract: A grommet includes a fitting body causing a fitting groove to be fitted to a circumferential edge of a through hole, and a first tubular body and a second tubular body. The fitting body includes a tubular portion, a rib rising from an outer circumferential wall surface of the tubular portion, and a locked portion disposed radially inside the rib, rising from the outer circumferential wall surface, and configured to be locked to an outer circumferential surface of the first tubular body, to suppress elastic deformation of the tubular portion or reduce elastic deformation amount. The rib is elastically deformable in a circumferential direction, and the outer circumferential wall surface has a plurality of projection groups constituted by the locked portion and a plurality of ribs disposed radially outside the locked portion.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 19, 2021
    Inventors: Hirotaka Kiyota, Masaru Kiuchi, Takeshi Onoda
  • Patent number: 11063412
    Abstract: The invention includes a tubular main body that protects an electric wire accommodated in an internal space, and a tubular or annular outer layer body stacked concentrically with the main body on an outer peripheral surface of the main body. The outer layer body is either a molded body formed into a shape having a hardness lower than that of the main body, and capable of absorbing sound when the outer layer body comes into contact with an external contacting object, or a molded body including a material having a hardness lower than that of the main body, and capable of absorbing sound when the outer layer body comes into contact with an external contacting object.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: July 13, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Masaru Kiuchi
  • Publication number: 20200389000
    Abstract: A corrugated tube includes a tube body having a tubular shape and configured to accommodate an electric wire inside, and a protection layer laminated on the inner circumferential surface of the tube body. The tube body has a bellows-shaped region having projections and recesses axially alternately continuous, and includes two circumferential ends circumferentially formed, and is circumferentially closed by the two circumferential ends facing each other. The protection layer is laminated in end regions corresponding to the two circumferential ends, respectively, of the inner circumferential surface, and has a hardness lower than the hardness of the tube body.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Inventor: Masaru Kiuchi
  • Publication number: 20200279673
    Abstract: A grommet includes a main body part fitted to a penetration hole penetrating an attachment panel, and a tubular part unified with the main body part so as to have a tubular shape. The tubular part includes a tubular part main body formed continuing from the main body part, and a fold-back part formed continuing from the tubular part main body on a side opposite to a side where the main body part is positioned in the axial direction and that can be folded back to the outside of the tubular part main body. The fold-back part is foldable between an attachment position where the fold-back part is folded back to the outside of the tubular part main body, and a use position where the fold-back part is positioned on the side opposite to the side where the main body part is positioned.
    Type: Application
    Filed: January 27, 2020
    Publication date: September 3, 2020
    Inventors: Masaru Kiuchi, Hirotaka Kiyota, Takeshi Onoda
  • Publication number: 20200276943
    Abstract: A grommet includes: a main body part fitted to a penetration hole penetrating an attachment panel along an axial direction, stops water at the penetration hole, and has a wiring material inserted thereinto along the axial direction; and a tubular part unified with the main body part so as to have a tubular shape, and has the wiring material inserted thereinto. The tubular part includes a halved part formed to have a shape of a part of the tubular part in a circumferential direction, an open part where an inside of the tubular part is open at a position except a position where the halved part is formed in the circumferential direction, and an open/close part formed continuing from the halved part and is able to open and close the open part.
    Type: Application
    Filed: January 31, 2020
    Publication date: September 3, 2020
    Inventors: Masaru Kiuchi, Takeshi Onoda