Patents by Inventor Hideyuki Tokunaga

Hideyuki Tokunaga 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: 20240109734
    Abstract: A conveyance equipment includes swirl flow-forming body, discharge fluid rectification cover and skirt. The swirl flow-forming body has columnar first body. A columnar recess is inward of lower end face of first body. A pair of fluid passages are formed in columnar first body to extend to inside surface of columnar recess and supply fluid into columnar recess to generate swirling flow. The discharge fluid rectification cover has a second body which includes a disk-shaped base plate and a peripheral wall that extends around the periphery of the base plate. The second body is positioned to cover the columnar recess. A suction port is in the bottom plate. A discharge passage is in the peripheral wall to extend generally tangential to the inside surface of peripheral wall. The skirt is cylindrical and is made of an elastic thin film, a top opening of which is connected to the suction port.
    Type: Application
    Filed: March 25, 2022
    Publication date: April 4, 2024
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Katsuhiro KOSHIISHI, Hidemitsu TANAKA, Yuji KASAI, Naonari IWASAKA
  • Publication number: 20230191620
    Abstract: A conveyance device includes a plate-shaped main body that faces a plate-shaped object to be conveyed, a plurality of recesses formed in the plate-shaped main body to face an outer circumferential portion of the plate-shaped object to be conveyed, a plurality of discharge channels formed inside the main body, and a plurality of movement restriction members formed on the main body to contact with and to restrict lateral movement of the plate-shaped object to be conveyed. One each of the plurality of discharge channels is connected to one each of the plurality of recesses, and a swirling flow is formed in the plurality of recesses by fluid supplied from the plurality of connected discharge channels. In each of the plurality of recesses, a portion of an opening not covered by the plate-shaped object to be conveyed is covered by one of the plurality of movement restriction members.
    Type: Application
    Filed: May 18, 2021
    Publication date: June 22, 2023
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hidemitsu TANAKA, Hideyuki TOKUNAGA, Katsuhiro KOSHIISHI, Yuji KASAI, Naonari IWASAKA
  • Patent number: 11642794
    Abstract: A suction device that holds a member by suction in a stable manner is provided. The suction device includes a columnar main body, a flat end face formed on the main body, a concave part formed in the end face, a fluid flow-forming supply paths for forming a fluid swirl flow in the concave part by discharging fluid into the concave part, the fluid swirl flow generating negative pressure that applies suction to a member, and a linear guide groove formed on the end surface along a direction in which the fluid discharged into the concave part flows out of the concave part.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: May 9, 2023
    Assignee: HARMOTEC CO., LTD.
    Inventors: Hitoshi Iwasaka, Hideyuki Tokunaga, Yuji Kasai, Katsuhiro Koshiishi, Hidemitsu Tanaka, Hirohiko Ono, Katsutoshi Minoura, Naonari Iwasaka
  • Patent number: 11339010
    Abstract: A swirl-flow forming body includes a through-hole; a jetting port that is formed on an inner periphery facing the through-hole; a fluid passage that allows fluid to be discharged into the through-hole via the jetting port so as to form a swirl flow that generates negative pressure for applying suction to a target object; and a flange portion that is formed so as to protrude from the inner periphery, the flange portion allowing passage of fluid to which suction is applied by the negative pressure while preventing the fluid discharged via the jetting port from flowing out of the through-hole towards the target object. The inner periphery is formed so as to guide the fluid discharged via the jetting port, in a direction away from the target object, to be discharged from the through-hole.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: May 24, 2022
    Assignee: HARMOTEC CO., LTD.
    Inventors: Hideyuki Tokunaga, Katsuhiro Koshiishi, Hidemitsu Tanaka, Hitoshi Iwasaka
  • Publication number: 20210229935
    Abstract: A swirl-flow forming body includes a through-hole; a jetting port that is formed on an inner periphery facing the through-hole; a fluid passage that allows fluid to be discharged into the through-hole via the jetting port so as to form a swirl flow that generates negative pressure for applying suction to a target object; and a flange portion that is formed so as to protrude from the inner periphery, the flange portion allowing passage of fluid to which suction is applied by the negative pressure while preventing the fluid discharged via the jetting port from flowing out of the through-hole towards the target object. The inner periphery is formed so as to guide the fluid discharged via the jetting port, in a direction away from the target object, to be discharged from the through-hole.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 29, 2021
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hideyuki TOKUNAGA, Katsuhiro KOSHIISHI, Hidemitsu TANAKA, Hitoshi IWASAKA
  • Patent number: 11008180
    Abstract: Swirl flow-forming body includes main body, first end face that is formed at main body and faces a member to which suction is applied, hole that opens on first end face, jetting port that is formed on inner periphery of main body, inner periphery facing hole, and fluid passage that allows fluid to be discharged into hole via jetting port so as to form a swirl flow that generates negative pressure for applying suction to the member. Inner periphery is formed so as to guide fluid discharged via jetting port, in a direction away from the member, to be discharged from hole.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: May 18, 2021
    Assignee: HARMOTEC CO., LTD.
    Inventors: Hitoshi Iwasaka, Yuji Kasai, Hideyuki Tokunaga, Katsuhiro Koshiishi, Hidemitsu Tanaka, Katsutoshi Minoura
  • Patent number: 10677982
    Abstract: A planar illumination device according to an embodiment includes: a light guide plate that guides an incident light from a side surface; a light source that is disposed in the side surface side and emits light incident to the side surface; a frame that has a floor surface extending along a main surface of the light guide plate and accommodates the light guide plate and the light source; a reflection sheet that is disposed in the main surface side of the light guide plate and reflects light; and a first fixing member that is disposed between the reflection sheet and the floor surface and fixes at least a part of an end portion of the reflection sheet in the light source side to the floor surface.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: June 9, 2020
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Takashi Edamitsu, Hideyuki Tokunaga
  • Publication number: 20200164527
    Abstract: A suction device that holds a member by suction in a stable manner is provided. The suction device includes a columnar main body, a flat end face formed on the main body, a concave part formed in the end face, a fluid flow-forming means for forming a fluid swirl flow in the concave part by discharging fluid into the concave part, the fluid swirl flow generating negative pressure that applies suction to a member, and a linear guide groove formed on the end surface along a direction in which the fluid discharged into the concave part flows out of the concave part.
    Type: Application
    Filed: September 6, 2018
    Publication date: May 28, 2020
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Yuji KASAI, Katsuhiro KOSHIISHI, Hidemitsu TANAKA, Hirohiko ONO, Katsutoshi MINOURA, Naonari IWASAKA
  • Patent number: 10654654
    Abstract: Suction device includes swirl flow-forming body that forms a swirl flow to apply suction to material by use of Bernoulli's principle, and case that houses swirl flow-forming body, and guides flow of a fluid flowing out of concave part of swirl flow-forming body. Case includes guide part, flange part, and cover part. Guide part controls flow of a fluid flowing out of concave part of swirl flow-forming body and flowing along end face, such that the fluid flows in a direction away from a position of material. Flange part forms, between flange part and end face, a flow path for a fluid to flow out of concave part. Cover part is fixed on the top surface of main body of swirl flow-forming body.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: May 19, 2020
    Assignee: HARMOTEC CO., LTD.
    Inventors: Hitoshi Iwasaka, Hideyuki Tokunaga, Yuji Kasai
  • Publication number: 20200140211
    Abstract: Swirl flow-forming body includes main body, first end face that is formed at main body and faces a member to which suction is applied, hole that opens on first end face, jetting port that is formed on inner periphery of main body, inner periphery facing hole, and fluid passage that allows fluid to be discharged into hole via jetting port so as to form a swirl flow that generates negative pressure for applying suction to the member. Inner periphery is formed so as to guide fluid discharged via jetting port, in a direction away from the member, to be discharged from hole.
    Type: Application
    Filed: May 18, 2017
    Publication date: May 7, 2020
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Yuji KASAI, Hideyuki TOKUNAGA, Katsuhiro KOSHIISHI, Hidemitsu TANAKA, Katsutoshi MINOURA
  • Patent number: 10643881
    Abstract: Baffle plate to be attached to fluid flow-forming body includes baffle plate main body that is attachable to and detachable from fluid flow-forming body. Baffle plate main body allows a fluid to which suction is applied by negative pressure generated by fluid flow-forming body to pass through, while preventing a member from entering concave part of fluid flow-forming body. Baffle plate also includes support member that is attached to main body of fluid flow-forming body at one end thereof, and supports baffle plate main body at the other end thereof such that baffle plate main body opposes end face of fluid flow-forming body. Support member supports baffle plate main body such that a gap between end face and baffle plate main body is maintained, and a fluid path is formed that allows a fluid flowing out of concave part to flow.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: May 5, 2020
    Assignee: HARMOTEC CO., LTD.
    Inventors: Hitoshi Iwasaka, Hideyuki Tokunaga, Yuji Kasai, Katsuhiro Koshiishi, Hidemitsu Tanaka
  • Patent number: 10488582
    Abstract: A planar illumination apparatus according to an embodiment includes a light guide plate that emits light from an emission surface, the light being incident on a lateral surface of the light guide plate; a light source that is arranged on the lateral surface side and has a light emitting surface that emits light to be incident on the lateral surface; a substrate that has two principal surfaces, a surface opposite to the light emitting surface of the light source being mounted on one of the principal surfaces; a frame that has a lateral surface and a floor surface, and accommodates the light guide plate, the light source, and the substrate; and a first coupling member that is arranged between the light guide plate and the floor surface and between the light source and the floor surface, and couples the light guide plate and the light source.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: November 26, 2019
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Hideyuki Tokunaga, Makoto Furuta, Takashi Edamitsu
  • Patent number: 10189166
    Abstract: Suction equipment 10 is provided with a swirl flow-forming body 1, a baffle plate 2, and connecting members 3 that connect swirl flow-forming body 1 and baffle plate 2. Baffle plate 2 obstructs a member W to which suction is applied from entering a concave part 12 provided in swirl flow-forming body 1. Connecting members 3 form, between end face 13 and baffle plate 2, a flow path for fluid to flow out of concave part 12.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: January 29, 2019
    Assignee: HARMOTEC CO., LTD.
    Inventors: Hitoshi Iwasaka, Hideyuki Tokunaga, Yuji Kasai
  • Publication number: 20190027393
    Abstract: Baffle plate to be attached to fluid flow-forming body includes baffle plate main body that is attachable to and detachable from fluid flow-forming body. Baffle plate main body allows a fluid to which suction is applied by negative pressure generated by fluid flow-forming body to pass through, while preventing a member from entering concave part of fluid flow-forming body. Baffle plate also includes support member that is attached to main body of fluid flow-forming body at one end thereof, and supports baffle plate main body at the other end thereof such that baffle plate main body opposes end face of fluid flow-forming body. Support member supports baffle plate main body such that a gap between end face and baffle plate main body is maintained, and a fluid path is formed that allows a fluid flowing out of concave part to flow.
    Type: Application
    Filed: October 27, 2017
    Publication date: January 24, 2019
    Applicant: Harmotec Co., Ltd.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Yuji KASAI, Katsuhiro KOSHIISHI, Hidemitsu TANAKA
  • Publication number: 20180222679
    Abstract: Suction device includes swirl flow-forming body that forms a swirl flow to apply suction to material by use of Bernoulli's principle, and case that houses swirl flow-forming body, and guides flow of a fluid flowing out of concave part of swirl flow-forming body. Case includes guide part, flange part, and cover part. Guide part controls flow of a fluid flowing out of concave part of swirl flow-forming body and flowing along end face, such that the fluid flows in a direction away from a position of material. Flange part forms, between flange part and end face, a flow path for a fluid to flow out of concave part. Cover part is fixed on the top surface of main body of swirl flow-forming body.
    Type: Application
    Filed: June 30, 2016
    Publication date: August 9, 2018
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Yuji KASAI
  • Publication number: 20180067252
    Abstract: A planar illumination device according to an embodiment includes: a light guide plate that guides an incident light from a side surface; a light source that is disposed in the side surface side and emits light incident to the side surface; a frame that has a floor surface extending along a main surface of the light guide plate and accommodates the light guide plate and the light source; a reflection sheet that is disposed in the main surface side of the light guide plate and reflects light; and a first fixing member that is disposed between the reflection sheet and the floor surface and fixes at least a part of an end portion of the reflection sheet in the light source side to the floor surface.
    Type: Application
    Filed: September 5, 2017
    Publication date: March 8, 2018
    Inventors: Takashi EDAMITSU, Hideyuki TOKUNAGA
  • Publication number: 20180065257
    Abstract: Suction equipment is provided with a swirl flow-forming body, a baffle plate, and connecting members that connect swirl flow-forming body and baffle plate. Baffle plate obstructs a member to which suction is applied from entering a concave part provided in swirl flow-forming body. Connecting members form, between end face and baffle plate, a flow path for fluid to flow out of concave part.
    Type: Application
    Filed: February 29, 2016
    Publication date: March 8, 2018
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Yuji KASAI
  • Publication number: 20170371095
    Abstract: A planar illumination apparatus according to an embodiment includes a light guide plate that emits light from an emission surface, the light being incident on a lateral surface of the light guide plate; a light source that is arranged on the lateral surface side and has a light emitting surface that emits light to be incident on the lateral surface; a substrate that has two principal surfaces, a surface opposite to the light emitting surface of the light source being mounted on one of the principal surfaces; a frame that has a lateral surface and a floor surface, and accommodates the light guide plate, the light source, and the substrate; and a first coupling member that is arranged between the light guide plate and the floor surface and between the light source and the floor surface, and couples the light guide plate and the light source.
    Type: Application
    Filed: June 19, 2017
    Publication date: December 28, 2017
    Inventors: Hideyuki Tokunaga, Makoto Furuta, Takashi Edamitsu
  • Publication number: 20170293071
    Abstract: A planar lighting device according to an embodiment includes: a light guide that has flexibility and receives light from a side surface and emits the light from a light-emitting surface; a light source disposed close to the side surface and emits light that enters the side surface; a first frame having a curved shape and having an aperture; a second frame having a curved surface for sandwiching the light guide between the first frame and the curved surface such that the light-emitting surface faces the aperture; and an optical sheet disposed close to the light-emitting surface with at least a part of an edge portion of the optical sheet being disposed in a space defined by the first frame and the light guide, the part being separated from the first frame.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 12, 2017
    Applicant: MINEBEA MITSUMI INC.
    Inventors: Shohei TAKADA, Hideyuki TOKUNAGA
  • Publication number: 20160300748
    Abstract: Conveyance equipment for conveying a plate-like member includes plural items of liquid discharging equipment that hold the member by discharging liquid to generate a negative pressure between the liquid discharging equipment and the member. Each of the plural items of liquid discharging equipment includes a columnar main body, a flat end face formed at the main body, which faces the member, a concave part formed at the end face, and one or more liquid passages that discharge liquid into the concave part at a peripheral edge of the concave part. The one or more liquid passages are arranged so that a direction in which a liquid flows out of the concave part along the end face and a direction from a center of gravity of the member toward a position of the member, opposite the liquid discharging equipment, form an angle smaller than or equal to 90 degrees.
    Type: Application
    Filed: November 27, 2014
    Publication date: October 13, 2016
    Applicant: HARMOTEC CO., LTD.
    Inventors: Hitoshi IWASAKA, Hideyuki TOKUNAGA, Yuji KASAI, Katsuhiro KOSHIISHI