Patents by Inventor Naoki Toda

Naoki Toda 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: 10926436
    Abstract: Provided is an injection molding method for resin that contains reinforcing fiber, the method being capable of easily eliminating uneven distribution of added components. The injection molding method is provided with: a plasticizing step for supplying resin pellets P and added components to a cylinder equipped with a screw 10, which has a rotating axis as the center is capable of rotating normally and in reverse, and generating molten resin by rotating the screw 10 in the normal direction; and an injecting step for injecting the molten resin M comprising the added components into a cavity. In the plasticizing step, a reverse rotation operation for reversing the rotation of the screw 10 is performed or a screw-stopping operation of stopping the normal rotation of the screw 10 is performed with a prescribed timing and for a prescribed period.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: February 23, 2021
    Assignees: UBE MACHINERY CORPORATION, LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Munehiro Nobuta, Naoki Toda, Toshihiko Kariya, Takeshi Yamaguchi, Kiyoshi Kinoshita
  • Publication number: 20210001757
    Abstract: An impact absorbing device for a vehicle seat includes: a first base member; a second base member; and an impact absorbing member. The first base member rotatably supports the second base member. The impact absorbing member includes: a first fixing portion fixed to the first base member; a second fixing portion fixed to the second base member; and a deformable portion. The deformable portion is provided between the first fixing portion and the second fixing portion, and is configured to be bent by the rotation of the second base member. A distance between the first fixing portion and the second fixing portion in an undeformed state of the deformable portion has a value intermediate in a range of variation of the distance that varies depending on the bending of the deformable portion.
    Type: Application
    Filed: June 29, 2020
    Publication date: January 7, 2021
    Applicant: TACHI-S CO., LTD.
    Inventor: Naoki TODA
  • Publication number: 20200398721
    Abstract: A headrest includes a frame made of metal, the frame includes a base plate supported by a headrest fixing device, and a cover plate disposed on an occupant head side of the base plate. The cover plate includes a cover panel portion, and a cover frame portion extending from an outer circumferential edge of the cover panel portion toward the base plate. The base plate includes a base panel portion, and a base frame portion extending from an outer circumferential edge of the base panel portion toward the cover plate, and fitted into the cover frame portion. A first part of the cover frame portion is joined to the base frame portion, and a remaining second part of the cover frame portion is enjoined to the base frame portion.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 24, 2020
    Applicant: TACHI-S CO., LTD.
    Inventors: Keita MYOCHIN, Naoki TODA
  • Patent number: 10836283
    Abstract: A seat lock device includes: a striker installed in a vehicle body; and a lock unit provided on a seat back tiltable in a seat front-rear direction and holding the seat back in a standing state by locking the striker. The striker includes a base bracket attached to the vehicle body and a U-shaped rod locked by the lock unit, the base bracket has two support portions which respectively support end portions of the rod with a space therebetween in the seat front-rear direction, and at least one of the support portions deforms when a load exceeding a predetermined load is input to the rod so as to permit movement of the end portion of the rod supported by the support portion with respect to the base bracket.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: November 17, 2020
    Assignee: TACHI-S CO., LTD.
    Inventor: Naoki Toda
  • Patent number: 10766178
    Abstract: Provided is a screw that is for use in an injection molding machine and that makes it possible to benefit from the kneading effect of a multi-start screw while minimizing the received friction resistance. The screw for an injection molding machine is provided with a first stage 20 on the upstream side and a second stage 30 on the downstream side. The screw for an injection molding machine is characterized in that: the first stage 20 is provided with a compression section 22 comprising a main scraper 25 and an auxiliary scraper 26 having a smaller outer diameter than the main scraper 25; and the second stage 30 is provided with a multi-start screw section 31, said multi-start screw section being provided on the upstream side and comprising a plurality of scrapers, and a fin kneading section 32 provided downstream from the multi-start screw section.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: September 8, 2020
    Assignees: U-MHI PLATECH CO., LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Munehiro Nobuta, Naoki Toda, Toshihiko Kariya, Takeshi Yamaguchi, Kiyoshi Kinoshita
  • Publication number: 20190389340
    Abstract: A seat lock device includes: a striker installed in a vehicle body; and a lock unit provided on a seat back tiltable in a seat front-rear direction and holding the seat back in a standing state by locking the striker. The striker includes a base bracket attached to the vehicle body and a U-shaped rod locked by the lock unit, the base bracket has two support portions which respectively support end portions of the rod with a space therebetween in the seat front-rear direction, and at least one of the support portions deforms when a load exceeding a predetermined load is input to the rod so as to permit movement of the end portion of the rod supported by the support portion with respect to the base bracket.
    Type: Application
    Filed: April 18, 2019
    Publication date: December 26, 2019
    Applicant: TACHI-S CO., LTD.
    Inventor: Naoki TODA
  • Patent number: 10486351
    Abstract: There is provided a screw of an injection molding machine that can eliminate uneven distribution of reinforcing fibers without giving an excessive shear force to the reinforcing fibers. A screw is provided inside a heating cylinder of an injection molding machine to which a resin pellet is fed on an upstream side in a conveyance direction of resin and to which reinforcing fibers are fed on a downstream side therein, and includes: a first stage at which the resin pellet which is fed is melted; and a second stage that continues to the first stage, and at which molten resin and the reinforcing fibers are mixed with each other. A second flight provided at the second stage includes: a large-diameter flight with a relatively large outer diameter; and a small-diameter flight with a relatively small outer diameter.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: November 26, 2019
    Assignees: U-MHI PLATECH CO., LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Toshihiko Kariya, Munehiro Nobuta, Naoki Toda, Kiyoshi Kinoshita, Takeshi Yamaguchi
  • Patent number: 10464246
    Abstract: An injection molding method includes: a plasticizing process of feeding a resin pellet and additive components to a heating cylinder including a screw that can rotate around a rotation axis and can advance and retreat along the rotation axis, and generating molten resin by rotating the screw in a normal direction; and an injection process of injecting to a cavity the molten resin containing the additive components. In the plasticizing process, retreat operation of forcibly retreating the screw is performed at a predetermined velocity by a predetermined stroke or a predetermined time.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: November 5, 2019
    Assignees: U-MHI PLATECH CO., LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Munehiro Nobuta, Naoki Toda, Toshihiko Kariya, Takeshi Yamaguchi, Kiyoshi Kinoshita
  • Patent number: 10443468
    Abstract: The fuel addition system comprises: a fuel addition valve, a fuel tank, a first pressure storage chamber storing fuel to be supplied to a fuel injector, a supply pump increasing a pressure of fuel inside the fuel tank and supplying the fuel to the first pressure storage chamber, a pressure reduction valve discharging fuel stored in the first pressure storage chamber, a pressure reduction fuel passage supplying fuel discharged from the first pressure storage chamber to the fuel addition valve, and a control device controlling the fuel addition valve and the pressure reduction valve. The control device detects or estimates a temperature of fuel supplied to the fuel addition valve and, when injecting fuel from the fuel addition valve, controls an amount of fuel discharged from the first pressure storage chamber through the pressure reduction valve so that the temperature of the fuel becomes a reference temperature or more.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 15, 2019
    Assignees: Soken, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuro Serai, Kenichi Tomomatsu, Takayoshi Kojima, Naoki Toda, Kazuhiro Umemoto, Toshihiro Mori, Hiromasa Nishioka
  • Patent number: 10377273
    Abstract: A vehicle seat includes: a seat cushion; a seat back; a frame; a headrest which is provided on an upper end portion of the frame; and a reclining portion wherein: the reclining portion includes: a link supporting the seat back at a swing end section; a sector gear rotated integrally with the link; a lock unit configured to move between an engaging position and a disengaging position for releasing from the engagement with the sector gear and configured to unrotatably hold the sector gear at the engaging position; and a biasing section biasing the lock unit toward the engaging position; and the lock unit includes: a pinion gear meshing with the sector gear at the engaging position and allowing rotation of the sector gear by rotating in a state of meshing with the sector gear; and a gear holding part configured to unrotatably hold the pinion gear.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: August 13, 2019
    Assignee: TACHI-S CO., LTD.
    Inventors: Naoki Toda, Atsushi Koike, Takuto Ogawa
  • Publication number: 20180238218
    Abstract: The fuel addition system comprises: a fuel addition valve, a fuel tank, a first pressure storage chamber storing fuel to be supplied to a fuel injector, a supply pump increasing a pressure of fuel inside the fuel tank and supplying the fuel to the first pressure storage chamber, a pressure reduction valve discharging fuel stored in the first pressure storage chamber, a pressure reduction fuel passage supplying fuel discharged from the first pressure storage chamber to the fuel addition valve, and a control device controlling the fuel addition valve and the pressure reduction valve. The control device detects or estimates a temperature of fuel supplied to the fuel addition valve and, when injecting fuel from the fuel addition valve, controls an amount of fuel discharged from the first pressure storage chamber through the pressure reduction valve so that the temperature of the fuel becomes a reference temperature or more.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 23, 2018
    Applicants: SOKEN INC., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuro SERAI, Kenichi TOMOMATSU, Takayoshi KOJIMA, Naoki TODA, Kazuhiro UMEMOTO, Toshihiro MORI, Hiromasa NISHIOKA
  • Publication number: 20180093590
    Abstract: A vehicle seat includes: a seat cushion; a seat back; a frame; a headrest which is provided on an upper end portion of the frame; and a reclining portion wherein: the reclining portion includes: a link supporting the seat back at a swing end section; a sector gear rotated integrally with the link; a lock unit configured to move between an engaging position and a disengaging position for releasing from the engagement with the sector gear and configured to unrotatably hold the sector gear at the engaging position; and a biasing section biasing the lock unit toward the engaging position; and the lock unit includes: a pinion gear meshing with the sector gear at the engaging position and allowing rotation of the sector gear by rotating in a state of meshing with the sector gear; and a gear holding part configured to unrotatably hold the pinion gear.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 5, 2018
    Inventors: Naoki TODA, Atsushi KOIKE, Takuto OGAWA
  • Publication number: 20180022003
    Abstract: Provided is an injection molding method in which a constricting section is provided at a boundary between a first stage and a second stage of a screw. When a mixture of a molten resin and reinforcing fibers passes through the constricting section, compression force higher than compression force on an upstream side of the constricting section is applied to the mixture. A supply section on a downstream side of the constricting section has a shaft diameter smaller than an outer diameter of the constricting section. Therefore, the vicinity of the supply section becomes a reduced-pressure region with respect to the mixture having passed through the constricting section, and the mixture is accordingly expanded. As a result, spring-back occurs on the reinforcing fibers and a Barus effect occurs on the molten resin, thereby making it possible to produce a state that is advantageous to open the fiber bundle.
    Type: Application
    Filed: January 16, 2015
    Publication date: January 25, 2018
    Inventors: Munehiro NOBUTA, Naoki TODA, Toshihiko KARIYA, Takeshi YAMAGUCHI, Kiyoshi KINOSHITA
  • Patent number: 9856839
    Abstract: A fuel injection valve includes a body including a first chamber that supplies fuel of a first pressure, a second chamber that supplies fuel of a second pressure, and an injection hole, a valve chamber member including a valve chamber connectable to the first chamber and the second chamber, a control chamber member including a control chamber connectable to the first chamber, a needle pressed by pressure of fuel in the control chamber in a direction that causes fuel injection from the injection hole to stop, an actuator, a valve element that selectively connects the first chamber, second chamber, and the valve chamber according to the actuator extending and contracting, and a transmission mechanism that when the actuator extends, transmits the force to the needle as a force in a direction that causes fuel to be injected from the injection hole.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: January 2, 2018
    Assignee: DENSO CORPORATION
    Inventors: Motoya Kanbara, Fumiaki Arikawa, Satoshi Sugawara, Daiji Ueda, Hiroki Tanada, Toshiaki Hijima, Hitoshi Maegawa, Naoki Toda
  • Publication number: 20170355119
    Abstract: Provided is a screw that is for use in an injection molding machine and that makes it possible to benefit from the kneading effect of a multi-start screw while minimizing the received friction resistance. The screw for an injection molding machine is provided with a first stage 20 on the upstream side and a second stage 30 on the downstream side. The screw for an injection molding machine is characterized in that: the first stage 20 is provided with a compression section 22 comprising a main scraper 25 and an auxiliary scraper 26 having a smaller outer diameter than the main scraper 25; and the second stage 30 is provided with a multi-start screw section 31, said multi-start screw section being provided on the upstream side and comprising a plurality of scrapers, and a fin kneading section 32 provided downstream from the multi-start screw section.
    Type: Application
    Filed: January 15, 2015
    Publication date: December 14, 2017
    Inventors: Munehiro NOBUTA, Naoki TODA, Toshihiko KARIYA, Takeshi YAMAGUCHI, Kiyoshi KINOSHITA
  • Patent number: 9821498
    Abstract: In an injection molding method, using a heating cylinder having on the front end thereof a discharge nozzle, a single axis screw is rotatable inside the heating cylinder, a fiber-supplying device fills reinforcing fiber into the heating cylinder, and injection molding is performed while supplying the reinforcing fiber and the resin starting material separately and supplying the reinforcing fiber on the front side of the resin starting material. The method includes a plasticization process for obtaining a specified amount of a kneaded product by retracting the screw while rotating in the normal direction to melt the resin starting material and knead reinforcing fiber into the melted resin starting material, and an injection process for discharging the kneaded product from the discharge nozzle by advancing the screw. Reinforcing fiber is supplied into the heating cylinder in the injection process.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: November 21, 2017
    Assignees: U-MHI PLATECH CO., LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Ryoji Okabe, Toshihiko Kariya, Naoki Toda, Munehiro Nobuta
  • Publication number: 20170312954
    Abstract: Provided is an injection molding method for resin that contains reinforcing fiber, the method being capable of easily eliminating uneven distribution of added components. The injection molding method is provided with: a plasticizing step for supplying resin pellets P and added components to a cylinder equipped with a screw 10, which has a rotating axis as the center is capable of rotating normally and in reverse, and generating molten resin by rotating the screw 10 in the normal direction; and an injecting step for injecting the molten resin M comprising the added components into a cavity. In the plasticizing step, a reverse rotation operation for reversing the rotation of the screw 10 is performed or a screw-stopping operation of stopping the normal rotation of the screw 10 is performed with a prescribed timing and for a prescribed period.
    Type: Application
    Filed: June 25, 2015
    Publication date: November 2, 2017
    Inventors: Munehiro NOBUTA, Naoki TODA, Toshihiko KARIYA, Takeshi YAMAGUCHI, Kiyoshi KINOSHITA
  • Patent number: 9669573
    Abstract: The injection molding apparatus of the present invention includes: a heating cylinder; a screw that is provided rotatably in an inner portion of the heating cylinder; a resin feed hopper that feeds a resin pellet; and a fiber feed device that is provided ahead of the resin feed hopper and feeds reinforcing fibers into the heating cylinder. The screw includes a first stage that is located on a rear side, and in which the resin pellet is melted, and a second stage that is located on a front side, and in which the melted resin pellet and the reinforcing fibers are mixed, and a lead of a second flight provided in the second stage is larger than a lead of a first flight provided in the first stage.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: June 6, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES PLASTIC TECHNOLOGY CO., LTD.
    Inventors: Toshihiko Kariya, Naoki Toda, Munehiro Nobuta, Kiyoshi Kinoshita, Takeshi Yamaguchi, Kosuke Ikeda, Yuji Suzumura, Hitoshi Onuma, Ryoji Okabe, Masanori Takahashi
  • Publication number: 20170015036
    Abstract: In an injection molding method of fiber reinforced resin of the present invention, a resin accumulation region is provided closer to a downstream side than an injection completion position inside a heating cylinder, an injection pressure is given to molten resin that occupies the resin accumulation region in an injection process of a preceding cycle, and a shear force is given to the molten resin that occupies the resin accumulation region in a plasticizing process of a subsequent cycle. An inside of massive reinforcing fibers F is impregnated with the molten resin by giving a high injection pressure to the molten resin that occupies the resin accumulation region. Next, dispersion of the reinforcing fibers is promoted by giving a shear force in the plasticizing process of the subsequent cycle.
    Type: Application
    Filed: May 30, 2014
    Publication date: January 19, 2017
    Inventors: Toshihiko KARIYA, Munehiro NOBUTA, Naoki TODA, Kiyoshi KINOSHITA, Takeshi YAMAGUCHI
  • Publication number: 20170001354
    Abstract: There is provided a screw of an injection molding machine that can eliminate uneven distribution of additive components without giving an excessive shear force to the additive components. An injection molding method of the present invention includes: a plasticizing process of feeding a resin pellet P and additive components to a heating cylinder 201 including a screw 10 that can rotate around a rotation axis C and can advance and retreat along the rotation axis C, and generating molten resin M by rotating the screw 10 in a normal direction; and an injection process of injecting to a cavity the molten resin M containing the additive components. In the plasticizing process, retreat operation of forcibly retreating the screw 10 is performed at a predetermined velocity by a predetermined stroke D1 or a predetermined time.
    Type: Application
    Filed: April 20, 2015
    Publication date: January 5, 2017
    Inventors: Munehiro NOBUTA, Naoki TODA, Toshihiko KARIYA, Takeshi YAMAGUCHI, Kiyoshi KINOSHITA