Patents by Inventor Yohei Takaishi

Yohei Takaishi 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: 11415756
    Abstract: A duplex optical connector plug includes: a first engagement latch being elastically deformable and including a first abutting projection configured to abut on a front end of a first top wall and a first engagement part formed on an axial rear side of the first abutting projection and configured to engage with an optical connector adaptor when the first optical connector assembly is inserted into the optical connector adaptor; and a second engagement latch being elastically deformable and including a second abutting projection configured to abut on a front end of a second top wall and a second engagement part formed on an axial rear side of the second abutting projection and configured to engage with the optical connector adaptor when the second optical connector assembly is inserted into the optical connector adaptor.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: August 16, 2022
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Yohei Takaishi, Masayuki Jibiki, Naotoshi Shiokawa
  • Publication number: 20210286134
    Abstract: A duplex optical connector plug includes: a first engagement latch being elastically deformable and including a first abutting projection configured to abut on a front end of a first top wall and a first engagement part formed on an axial rear side of the first abutting projection and configured to engage with an optical connector adaptor when the first optical connector assembly is inserted into the optical connector adaptor; and a second engagement latch being elastically deformable and including a second abutting projection configured to abut on a front end of a second top wall and a second engagement part formed on an axial rear side of the second abutting projection and configured to engage with the optical connector adaptor when the second optical connector assembly is inserted into the optical connector adaptor.
    Type: Application
    Filed: November 24, 2020
    Publication date: September 16, 2021
    Inventors: Junji TAIRA, Yohei TAKAISHI, Masayuki JIBIKI, Naotoshi SHIOKAWA
  • Patent number: 10488601
    Abstract: Provided is an optical connector plug which, even when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of a guide protrusion portion, prevents disengagement of an engagement head and an optical conductor adaptor. In an optical connector plug, an axial front end of an engagement head of an engagement latch is separated axially rearward from an axial rear end of a guide protrusion portion, and is close to the axial rear end of the guide protrusion portion. According to the optical connector plug, when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of the guide protrusion portion, the axial front end of the engagement head is supported by the axial direction rear of the guide protrusion portion, so that the engagement head is prevented from moving vertically downward from the guide protrusion portion.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 26, 2019
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi, Norimasa Arai
  • Publication number: 20190033531
    Abstract: Provided is an optical connector plug which, even when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of a guide protrusion portion, prevents disengagement of an engagement head and an optical conductor adaptor. In an optical connector plug, an axial front end of an engagement head of an engagement latch is separated axially rearward from an axial rear end of a guide protrusion portion, and is close to the axial rear end of the guide protrusion portion. According to the optical connector plug, when a predetermined load is applied to a plug frame and the plug frame is warped to a vertical upper side of the guide protrusion portion, the axial front end of the engagement head is supported by the axial direction rear of the guide protrusion portion, so that the engagement head is prevented from moving vertically downward from the guide protrusion portion.
    Type: Application
    Filed: July 31, 2018
    Publication date: January 31, 2019
    Inventors: Junji TAIRA, Masayuki JIBIKI, Yohei TAKAISHI, Norimasa ARAI
  • Patent number: 10042126
    Abstract: In a duplex optical connector plug 10A, when one of first and second optical connector assemblies 11a, 11b is rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies 11a, 11b, the other of the optical connector assemblies 11a, 11b is rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies 11a, 11b.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: August 7, 2018
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi, Norimasa Arai
  • Patent number: 10042129
    Abstract: In a duplex optical connector plug 10A, when one of first and second optical connector assemblies 11a, 11b is rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies 11a, 11b, the other of the optical connector assemblies 11a, 11b is rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies 11a, 11b.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: August 7, 2018
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi, Norimasa Arai
  • Patent number: 9958623
    Abstract: A plug attached to a terminal part of a cable includes a plug main body engaged to an adaptor, a slider and a tool. The tool includes an insertion portion having a tapered part and an engaging projection and an operation part. When the operation part is pulled with a second surface of the insertion portion inserted in a slot being disposed in parallel with an extraction direction, the engaging projection is engaged with an engaging portion of the slider, the slider is moved integrally with the tool and the plug main body is pulled out from the adaptor. When the operation part is pulled with an inclined surface of the tapered part being disposed in parallel with the extraction direction, the engaging projection is released from an engaging state with the engaging portion and the tool is detached from the slider.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: May 1, 2018
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi, Norimasa Arai
  • Patent number: 9941631
    Abstract: A plug attached to a terminal part of a cable includes a plug main body to be connected to an adaptor, a latch, which is provided at the plug main body so as to be elastically displaceable from an outside of the plug main body toward an outer surface of the plug main body and which is engaged to the adaptor, and a slider including a cover part that is disposed at the outside of the latch. When the cover part is pushed down toward the outer surface or when the slider is moved in an extraction direction in which the plug main body is to be extracted from the adaptor, the latch is pushed down toward the outer surface and the engaging state of the latch is released.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: April 10, 2018
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi, Norimasa Arai
  • Publication number: 20180088283
    Abstract: In a duplex optical connector plug 10A, when one of first and second optical connector assemblies 11a, 11b is rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies 11a, 11b, the other of the optical connector assemblies 11a, 11b is rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies 11a, 11b.
    Type: Application
    Filed: December 1, 2017
    Publication date: March 29, 2018
    Inventors: Junji TAIRA, Masayuki JIBIKI, Yohei TAKAISHI, Norimasa ARAI
  • Publication number: 20180088288
    Abstract: In a duplex optical connector plug 10A, when one of first and second optical connector assemblies 11a, 11b is rotated around its axis in a clockwise direction or a counterclockwise direction, a rotational force of one of first and second gears is transmitted to the other of the gears by an intermediate gear. Thereby, interlockingly with the one of the optical connector assemblies 11a, 11b, the other of the optical connector assemblies 11a, 11b is rotated around its axis in the clockwise direction or the counterclockwise direction which is the same direction as the optical connector assemblies 11a, 11b.
    Type: Application
    Filed: December 1, 2017
    Publication date: March 29, 2018
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi, Norimasa Arai
  • Patent number: 9366827
    Abstract: An optical connector assembly and an optical connector adapter with a shutter each provide better heat radiation performance by blocking light outputted from a first optical fiber held by a first optical connector plug with a shutter thereby controlling temperature of an adapter body of the optical connector adapter not to exceed a prescribed level even when light having optical high power is outputted from the first optical fiber for about 15 minutes. An countermeasure against the light having optical high power is provided in a side wall of one of first and second receiving holes to be irradiated with the light outputted from the first optical fiber toward the second receiving hole and reflected thereafter by the shutter plate disposed in one of the first and second receiving holes.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: June 14, 2016
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi
  • Publication number: 20160062051
    Abstract: An optical connector assembly and an optical connector adapter with a shutter each provide better heat radiation performance by blocking light outputted from a first optical fiber held by a first optical connector plug with a shutter thereby controlling temperature of an adapter body of the optical connector adapter not to exceed a prescribed level even when light having optical high power is outputted from the first optical fiber for about 15 minutes. An countermeasure against the light having optical high power is provided in a side wall of one of first and second receiving holes to be irradiated with the light outputted from the first optical fiber toward the second receiving hole and reflected thereafter by the shutter plate disposed in one of the first and second receiving holes.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 3, 2016
    Inventors: Junji Taira, Masayuki Jibiki, Yohei Takaishi