Patents by Inventor Junji Taira

Junji Taira 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: 11892684
    Abstract: A tool for a plug, including a plug body fitted to an adapter and a slider supported on the plug body, includes an insertion portion and a handle. The insertion portion is configured to catch the slider. The handle extends in a direction opposite to the insertion portion. The handle includes a fragile part having a locally small cross-sectional area perpendicular to the direction in which the handle extends.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: February 6, 2024
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Masayuki Jibiki, Naotoshi Shiokawa
  • Publication number: 20230152528
    Abstract: A tool for a plug, including a plug body fitted to an adapter and a slider supported on the plug body, includes an insertion portion and a handle. The insertion portion is configured to catch the slider. The handle extends in a direction opposite to the insertion portion. The handle includes a fragile part having a locally small cross-sectional area perpendicular to the direction in which the handle extends.
    Type: Application
    Filed: January 12, 2023
    Publication date: May 18, 2023
    Inventors: Junji TAIRA, Masayuki JIBIKI, Naotoshi SHIOKAWA
  • Patent number: 11579372
    Abstract: A tool for a plug to which a cable having its basal end covered with a boot is attached is disclosed. The plug includes a plug body fitted to an adapter and a slider supported on the plug body. The tool includes an insertion portion that catches the slider, and a boot surrounding part that has a sleeve-like shape and accepts insertion of the cable and the boot, to accommodate the boot while the insertion portion is catching the slider. The boot surrounding part includes a slit extending along an entire length in an axial direction of the boot surrounding part and having a width greater than a diameter of the cable and smaller than a maximum diameter of the boot. While the insertion portion is catching the slider, the boot surrounding part is positioned inner than an outermost shape line of the plug as seen in the axial direction.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: February 14, 2023
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Masayuki Jibiki, Naotoshi Shiokawa
  • 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
  • Patent number: 11385417
    Abstract: A connector plug, having: a plug body that houses an optical fiber inside; a latch that is supported on an outer surface of the plug body to be capable of being engaged with the adapter; a slider that is supported on the plug body to be slidable with respect to the plug body; and a stopper that is detachably attachable between the plug body and the slider, wherein the slider is capable of elastically deforming the latch toward the outer surface of the plug body, when the slider is slid in a detaching direction which is a direction of drawing the connector plug out of the adapter, the slider elastically deforms the latch toward the outer surface of the plug body, and when the stopper is attached between the plug body and the slider, the stopper restricts the slider from elastically deforming the latch toward the outer surface of the plug body.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: July 12, 2022
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventors: Junji Taira, Naotoshi Shiokawa, Masayuki Jibiki
  • Patent number: 11329418
    Abstract: A connector plug has a connector plug body, a slider supported on the connector plug body and a jig attachable to the slider. The jig has an insertion portion which can be inserted into a slot of the slider and an operation portion extended from the insertion portion. The insertion portion has first and second insertion portions separated from each other by a predetermined distance. The slider can be moved in the detaching direction when the jig is moved in the detaching direction in a state that a first locking portion of the first insertion portion and a second locking portion of the second insertion portion are locked to the inner wall of the slot, and the locked state of the first locking portion and the second locking portion can be released when a force is applied to the operation portion in an inside direction to shorten the predetermined distance.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: May 10, 2022
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventors: Junji Taira, Shuichi Takashi, Naotoshi Shiokawa, Masayuki Jibiki
  • 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
  • Publication number: 20210281005
    Abstract: A connector plug has a connector plug body, a slider supported on the connector plug body and a jig attachable to the slider. The jig has an insertion portion which can be inserted into a slot of the slider and an operation portion extended from the insertion portion. The insertion portion has first and second insertion portions separated from each other by a predetermined distance. The slider can be moved in the detaching direction when the jig is moved in the detaching direction in a state that a first locking portion of the first insertion portion and a second locking portion of the second insertion portion are locked to the inner wall of the slot, and the locked state of the first locking portion and the second locking portion can be released when a force is applied to the operation portion in an inside direction to shorten the predetermined distance.
    Type: Application
    Filed: March 3, 2021
    Publication date: September 9, 2021
    Inventors: Junji TAIRA, Shuichi TAKASHI, Naotoshi SHIOKAWA, Masayuki JIBIKI
  • Publication number: 20210149125
    Abstract: A connector plug, having: a plug body that houses an optical fiber inside; a latch that is supported on an outer surface of the plug body to be capable of being engaged with the adapter; a slider that is supported on the plug body to be slidable with respect to the plug body; and a stopper that is detachably attachable between the plug body and the slider, wherein the slider is capable of elastically deforming the latch toward the outer surface of the plug body, when the slider is slid in a detaching direction which is a direction of drawing the connector plug out of the adapter, the slider elastically deforms the latch toward the outer surface of the plug body, and when the stopper is attached between the plug body and the slider, the stopper restricts the slider from elastically deforming the latch toward the outer surface of the plug body.
    Type: Application
    Filed: November 13, 2020
    Publication date: May 20, 2021
    Inventors: Junji TAIRA, Naotoshi SHIOKAWA, Masayuki JIBIKI
  • Patent number: 10983289
    Abstract: The present invention provides an optical connector capable of fixing the tensile strength fibers of the optical cable to the optical connector while keeping the tensile strength sufficiently without sacrificing the easiness of assembling the optical connector. The optical connector The optical connector is configured to be attached to an optical cable having an optical fiber and tensile strength fibers extending along a longitudinal direction of the optical fiber, having: a connector body having a male screw; and a fixing member used for fixing the tensile strength fibers to the connector body, the fixing member having a female screw, wherein the tensile strength fibers are configured to be interposed between the male screw and the female screw and fixed to the connector body when the male screw formed on the connector body and the female screw formed on the fixing member are screwed with each other, and the male screw has a notch extending in a direction crossing a screw thread of the male screw.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: April 20, 2021
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventors: Masayuki Jibiki, Yoshihisa Kurakami, Junji Taira
  • Publication number: 20200284992
    Abstract: A tool for a plug to which a cable having its basal end covered with a boot is attached is disclosed. The plug includes a plug body fitted to an adapter and a slider supported on the plug body. The tool includes an insertion portion that catches the slider, and a boot surrounding part that has a sleeve-like shape and accepts insertion of the cable and the boot, to accommodate the boot while the insertion portion is catching the slider. The boot surrounding part includes a slit extending along an entire length in an axial direction of the boot surrounding part and having a width greater than a diameter of the cable and smaller than a maximum diameter of the boot. While the insertion portion is catching the slider, the boot surrounding part is positioned inner than an outermost shape line of the plug as seen in the axial direction.
    Type: Application
    Filed: March 2, 2020
    Publication date: September 10, 2020
    Inventors: Junji TAIRA, Masayuki JIBIKI, Naotoshi SHIOKAWA
  • Publication number: 20200271870
    Abstract: The present invention provides an optical connector capable of fixing the tensile strength fibers of the optical cable to the optical connector while keeping the tensile strength sufficiently without sacrificing the easiness of assembling the optical connector. The optical connector The optical connector is configured to be attached to an optical cable having an optical fiber and tensile strength fibers extending along a longitudinal direction of the optical fiber, having: a connector body having a male screw; and a fixing member used for fixing the tensile strength fibers to the connector body, the fixing member having a female screw, wherein the tensile strength fibers are configured to be interposed between the male screw and the female screw and fixed to the connector body when the male screw formed on the connector body and the female screw formed on the fixing member are screwed with each other, and the male screw has a notch extending in a direction crossing a screw thread of the male screw.
    Type: Application
    Filed: February 21, 2020
    Publication date: August 27, 2020
    Inventors: Masayuki JIBIKI, Yoshihisa KURAKAMI, Junji TAIRA
  • 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: 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: 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: 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: 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: D980167
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: March 7, 2023
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventor: Junji Taira