Patents by Inventor Yuji SAGESAKA

Yuji SAGESAKA 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: 11566769
    Abstract: A vehicle lamp includes a lamp housing having an inner space and a welding surface, and a cover that covers the inner space and is joined to the lamp housing by laser welding to be disposed adjacent to another vehicle lamp. The cover includes a design surface portion and a welding leg. An end portion of the outer peripheral portion of the design surface portion on another vehicle lamp side is provided as an adjacent side end portion. The welding leg includes a facing surface portion that protrudes from the adjacent side end portion and faces the other vehicle lamp. The facing surface portion is provided at a position extending from an upper end portion to a lower end portion of the adjacent side end portion.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: January 31, 2023
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuji Sagesaka, Masakazu Sato
  • Publication number: 20210156537
    Abstract: A vehicle lamp includes a lamp housing having an inner space and a welding surface, and a cover that covers the inner space and is joined to the lamp housing by laser welding to be disposed adjacent to another vehicle lamp. The cover includes a design surface portion and a welding leg. An end portion of the outer peripheral portion of the design surface portion on another vehicle lamp side is provided as an adjacent side end portion. The welding leg includes a facing surface portion that protrudes from the adjacent side end portion and faces the other vehicle lamp. The facing surface portion is provided at a position extending from an upper end portion to a lower end portion of the adjacent side end portion.
    Type: Application
    Filed: April 15, 2019
    Publication date: May 27, 2021
    Inventors: Yuji SAGESAKA, Masakazu SATO
  • Patent number: 10974461
    Abstract: There is provided a resin molded product including a first member and a second member which are laser welded. A laser welded portion includes a first welding portion which is welded by laser welding of galvano method and a second welding portion which is welded by laser welding of flash method or laser welding of scanning method.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: April 13, 2021
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuji Sagesaka, Masakazu Sato
  • Patent number: 10816160
    Abstract: A vehicle lamp includes a lamp housing having an inner space and a welding surface, and a cover disposed adjacent to another vehicle lamp, and configured to cover the inner space and join to the lamp housing by laser welding. The cover includes a design surface in which an outer surface of an outer peripheral portion is formed as a curved surface and a welding leg that protrudes from a portion near the outer peripheral portion in the design surface. An annular portion on an inner peripheral side of the curved surface on an outer surface of the design surface is formed as a laser light incident surface. The curved surface is positioned on an outer peripheral side from an intersection point of a virtual line and the outer surface of the design.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: October 27, 2020
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuji Sagesaka, Masakazu Sato
  • Publication number: 20200263851
    Abstract: A vehicle lamp includes a lamp housing having an inner space and a welding surface, and a cover disposed adjacent to another vehicle lamp, and configured to cover the inner space and join to the lamp housing by laser welding. The cover includes a design surface in which an outer surface of an outer peripheral portion is formed as a curved surface and a welding leg that protrudes from a portion near the outer peripheral portion in the design surface. An annular portion on an inner peripheral side of the curved surface on an outer surface of the design surface is formed as a laser light incident surface. The curved surface is positioned on an outer peripheral side from an intersection point of a virtual line and the outer surface of the design.
    Type: Application
    Filed: February 10, 2020
    Publication date: August 20, 2020
    Inventors: Yuji Sagesaka, Masakazu Sato
  • Publication number: 20170291353
    Abstract: There is provided a resin molded product including a first member and a second member which are laser welded. A laser welded portion includes a first welding portion which is welded by laser welding of galvano method and a second welding portion which is welded by laser welding of flash method or laser welding of scanning method.
    Type: Application
    Filed: April 12, 2017
    Publication date: October 12, 2017
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuji Sagesaka, Masakazu Sato
  • Patent number: 9453631
    Abstract: Disclosed is a welding structure including a first member, and a light-transmissive second member. The second member includes a surface having an indented area. The first and second members are welded to each other at closely contacted surfaces thereof by projecting a spot light from the second member side in a state where the second member is in close contact with the first member. A curvature radius of the indented area existing on the surface of the second member, to which the spot light is projected, is at least two times a width of a welding portion.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: September 27, 2016
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Yuji Sagesaka, Masakazu Sato
  • Patent number: 9061468
    Abstract: A welding technique closely contacting a light transmissive second member to a first member and radiating deflection-controlled laser light from a second member side to weld both first and second members at a weld interface thereof. A reflectance reducing means is formed by an incident angle adjusting step provided in a cover plate that is disposed on a light radiating surface side of the second member. The reflectance reducing means reduces incident angles of the light at the light radiating surfaces of the first and second members, thus reducing the reflection loss of the laser light at the light radiating surfaces and improving the welding efficiency.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: June 23, 2015
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuji Sagesaka, Masakazu Sato
  • Publication number: 20150124461
    Abstract: Disclosed is a welding structure including a first member, and a light-transmissive second member. The second member includes a surface having an indented area. The first and second members are welded to each other at closely contacted surfaces thereof by projecting a spot light from the second member side in a state where the second member is in close contact with the first member. A curvature radius of the indented area existing on the surface of the second member, to which the spot light is projected, is at least two times a width of a welding portion.
    Type: Application
    Filed: October 24, 2014
    Publication date: May 7, 2015
    Inventors: Yuji SAGESAKA, Masakazu SATO
  • Publication number: 20140216646
    Abstract: A laser welding method includes positioning two resin molded products that are in contact with each other to a laser head having a mirror, and welding a contact surface of the resin molded products by a laser energy by allowing the laser beam to scan the resin molded products along a welding line with the mirror. The contact surface of the resin products has a first part on which the laser beam is incident at a first angle and a second part on which the laser beam is incident at a second angle larger than the first angle. The welding the contact surface includes controlling a luminous intensity of the laser beam so that the first part and the second part receive a substantially equal quantity of laser energy.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 7, 2014
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Masakazu Sato, Yuji Sagesaka
  • Publication number: 20140119042
    Abstract: Provided are a vehicular lamp in which a thermal strain in a welding portion of a lamp body and a front cover is suppressed and a thermal deformation during welding is suppressed and a method of manufacturing the same. The vehicular lamp includes a lamp housing configured by a lamp body and a front cover which is welded to the lamp body and has a front surface exposed to the outside. In the lamp body, a light absorption material is contained. In the front cover, a light absorption material is contained at least in a region including a welding portion. This light absorption material of the front cover has a lower heating effect than that of the lamp body.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuji SAGESAKA, Michihiko SUZUKI
  • Publication number: 20120241424
    Abstract: A welding technique closely contacting a light transmissive second member to a first member and radiating deflection-controlled laser light from a second member side to weld both first and second members at a weld interface thereof. A reflectance reducing means is formed by an incident angle adjusting step provided in a cover plate that is disposed on a light radiating surface side of the second member. The reflectance reducing means reduces incident angles of the light at the light radiating surfaces of the first and second members, thus reducing the reflection loss of the laser light at the light radiating surfaces and improving the welding efficiency.
    Type: Application
    Filed: March 20, 2012
    Publication date: September 27, 2012
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuji SAGESAKA, Masakazu SATO