Patents by Inventor Hirotsune Watanabe

Hirotsune Watanabe 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: 20220228067
    Abstract: A surfactant composition for a formed sand including 80 to 99.8 mass % of a compound (A) represented by formula (1); 0.1 to 10 mass % of a compound (B) represented by formula (2); and 0.1 to 10 mass % of an amphoteric surfactant (C): R1O-(EO)n—SO3M1??(1) wherein R1 represents a hydrocarbon group having 6 to 22 carbons, EO represents oxyethylene group, n is 1 to 10, and M1 represents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium; R2O—SO3M2??(2) wherein R2 represents a hydrocarbon group having 6 to 22 carbons, and M2 represents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium.
    Type: Application
    Filed: June 4, 2020
    Publication date: July 21, 2022
    Applicants: NOF CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Norihiro SUGAYA, Hiroyuki KOMIYA, Munehiro YAMADA, Hirotsune WATANABE, Shogo IZUMI
  • Publication number: 20220226889
    Abstract: A fluid heating furnace is a fluid heating furnace for recycling core sand used for a core. The fluid heating furnace includes: a fluid tank in which the core sand is heated by flowing gas while the core sand is caused to flow by the flowing gas; and a gas discharge passage communicating with the fluid tank such that the flowing gas is discharged through the gas discharge passage. The gas discharge passage includes an inlet portion via which the core sand is put into the fluid tank through the gas discharge passage. In the gas discharge passage, the flowing gas discharged through the gas discharge passage heats the core sand put into the gas discharge passage from the inlet portion, and in the fluid tank, the core sand heated in the gas discharge passage is further heated.
    Type: Application
    Filed: November 17, 2021
    Publication date: July 21, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke YAMASHITA, Hirotsune WATANABE
  • Publication number: 20220143681
    Abstract: An inorganic mold release agent for a core that is applied to a surface of a core containing an aggregate and an inorganic binder, and the mold release agent for a core is a powder containing silica powder, which is applied in a powder form to the surface of the core.
    Type: Application
    Filed: September 14, 2021
    Publication date: May 12, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasutake NAGATA, Hirotsune WATANABE
  • Publication number: 20220106673
    Abstract: The present disclosure provides a method for manufacturing an aluminum alloy member capable of suppressing deterioration in ductility thereof. In the method for manufacturing an aluminum alloy member, an aluminum alloy casting material that contains 2.0 to 5.5 mass % of Cu, and 4.0 to 7.0 mass % of Si in which a content of Mg is 0.5 mass % or less, a content of Zn is 1.0 mass % or less, a content of Fe is 1.0 mass % or less, a content of Mn is 0.5 mass % or less and the balance is made of Al and inevitable impurities is used. The method for manufacturing an aluminum alloy member includes a heating and holding step of heating and holding the aluminum alloy casting material within a solid-liquid coexisting temperature region; and a quenching step of rapidly cooling the aluminum alloy casting material after performing the heating and holding step.
    Type: Application
    Filed: December 17, 2021
    Publication date: April 7, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke YOKOTA, Hirotsune WATANABE, Makoto KIKUCHI, Hiroshi KAWAHARA, Yasushi IWATA, Jun YAOKAWA, Kazuma HIBI
  • Patent number: 11214857
    Abstract: The present disclosure provides a method for manufacturing an aluminum alloy member capable of suppressing deterioration in ductility thereof. In the method for manufacturing an aluminum alloy member, an aluminum alloy casting material that contains 2.0 to 5.5 mass % of Cu, and 4.0 to 7.0 mass % of Si in which a content of Mg is 0.5 mass % or less, a content of Zn is 1.0 mass % or less, a content of Fe is 1.0 mass % or less, a content of Mn is 0.5 mass % or less and the balance is made of Al and inevitable impurities is used. The method for manufacturing an aluminum alloy member includes a heating and holding step of heating and holding the aluminum alloy casting material within a solid-liquid coexisting temperature region; and a quenching step of rapidly cooling the aluminum ally casting material after performing the heating and holding step.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: January 4, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke Yokota, Hirotsune Watanabe, Makoto Kikuchi, Hiroshi Kawahara, Yasushi Iwata, Jun Yaokawa, Kazuma Hibi
  • Publication number: 20210283809
    Abstract: A cavity includes a first cavity portion, and a second cavity portion that is formed between the first cavity portion and a runner and that corresponds to a baseboard. There is adopted a configuration in which a foamed admixture is supplied to the first cavity portion via the second cavity portion upon being supplied to the cavity via the runner. A collision portion with which the foamed admixture supplied to the cavity can collide before reaching the first cavity portion is formed at the second cavity portion.
    Type: Application
    Filed: November 27, 2020
    Publication date: September 16, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hirotsune WATANABE
  • Publication number: 20210270664
    Abstract: An opening portion (34) that is formed so as to pass-through an opening/closing plate portion (32) of a gate (30), can be disposed at a region overlapping a lower end opening (24A) of a hopper (20). The opening portion (34) is structured by a first pass-through portion (34A), and a second pass-through portion (34B) that is formed so as to be continuous with the first pass-through portion (34A). A width, in a direction orthogonal to a lined-up direction in which the first pass-through portion (34A) and the second pass-through portion (34B) are lined up, is narrower than the first pass-through portion (34A). Further, a driving mechanism (40) moves the gate (30) such that the opening/closing plate portion (32) moves in the lined-up direction as seen in a plan view.
    Type: Application
    Filed: June 5, 2019
    Publication date: September 2, 2021
    Inventors: Youhei Noguchi, Koji Sakou, Hirotaka Kurita, Takashi Nagaya, Hirotsune Watanabe, Takumi Maegawa
  • Publication number: 20210268572
    Abstract: When molding surfaces (50A) of a pair of dies (50) are to be cleaned by air-blowing, air is blown towards the molding surfaces (50A) from blowing nozzles (22A) of a cleaning blowing function portion (22) while a moving body (16) is reciprocatingly moved by driving force of a driving mechanism (18). When a parting agent is to be applied to the molding surfaces (50A) of the pair of dies (50), the mold release agent is jetted out towards the molding surfaces (50A) from spraying nozzles (24A) of a parting agent application function portion (24) while the moving body (16) is reciprocatingly moved by the driving force of the driving mechanism (18). In both of these situations, at the same time as the treatment of the molding surfaces (50A), a cleaning brush (32) reciprocatingly moves together with the moving body (16) and sweeps a device floor surface (12).
    Type: Application
    Filed: April 24, 2019
    Publication date: September 2, 2021
    Inventors: Youhei Noguchi, Koji Sakou, Hirotaka Kurita, Takashi Nagaya, Hirotsune Watanabe, Katsutoshi Okumura
  • Publication number: 20210129210
    Abstract: A method of reusing core sand includes crushing a core used for casting into granules, the core includes water glass as a binder, and the water glass includes water-soluble water glass and water-insoluble water glass; heating the core; detaching the water glass from the core sand; and separating and collecting the core sand from a mixture of the water glass and the core sand.
    Type: Application
    Filed: January 15, 2021
    Publication date: May 6, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke YAMASHITA, Hirotsune WATANABE, Masashi MORIKAWA
  • Publication number: 20210130237
    Abstract: A manufacturing method for a mold adhesive according to an aspect of the disclosure includes a step of preparing aqueous solution containing water glass, a step of heating the aqueous solution to 90° C. or higher but not exceeding 100° C., and a step of extracting gelled water glass as the mold adhesive, the gelled water glass being separated on a liquid surface of the heated aqueous solution. A solid component of the prepared aqueous solution falls within a range of 25 mass % or higher but not exceeding 35 mass %.
    Type: Application
    Filed: July 14, 2020
    Publication date: May 6, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaomi MITSUTAKE, Hirotsune WATANABE
  • Patent number: 10967421
    Abstract: A method of reusing core sand includes crushing a core used for casting into granules, the core includes water glass as a binder, and the water glass includes water-soluble water glass and water-insoluble water glass; heating the core; detaching the water glass from the core sand; and separating and collecting the core sand from a mixture of the water glass and the core sand.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: April 6, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Yamashita, Hirotsune Watanabe, Masashi Morikawa
  • Patent number: 10888919
    Abstract: A core forming device is equipped with a kneading tank in which raw materials of a core are kneaded, a raw material supply unit that supplies the raw materials to the kneading tank, a mold that accommodates a kneaded material including the raw materials kneaded in the kneading tank and that forms the core, a piston that injects the kneaded material into the mold, a position sensor that detects a position of the piston, and a control unit that controls a supply amount of the raw materials supplied to the kneading tank from the raw material supply unit. The control unit determines the supply amount of the raw materials based on a difference between the position of the piston upon completion of injection and a reference position of the piston.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: January 12, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Sintokogio, Ltd.
    Inventors: Katsutoshi Okumura, Hirotsune Watanabe, Shogo Izumi, Hirotaka Kurita, Katsushige Yamamoto
  • Publication number: 20200238367
    Abstract: A method of reusing core sand includes crushing a core used for casting into granules, the core includes water glass as a binder, and the water glass includes water-soluble water glass and water-insoluble water glass; heating the core; detaching the water glass from the core sand; and separating and collecting the core sand from a mixture of the water glass and the core sand.
    Type: Application
    Filed: April 17, 2020
    Publication date: July 30, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke YAMASHITA, Hirotsune WATANABE, Masashi MORIKAWA
  • Patent number: 10668525
    Abstract: A method of reusing core sand includes crushing a core used for casting into granules; heating the granules at a temperature of 300° C. to 550° C.; causing the heated granules to collide against each other such that water glass used as a binder detaches from the core sand; and blowing air into a mixture of the water glass and the core sand, which are detached from each other, such that the core sand is separated and collected from the mixture due to a difference in specific gravity between the water glass and the core sand.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: June 2, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Yamashita, Hirotsune Watanabe, Masashi Morikawa
  • Publication number: 20190284669
    Abstract: The present disclosure provides a method for manufacturing an aluminum alloy member capable of suppressing deterioration in ductility thereof. In the method for manufacturing an aluminum alloy member, an aluminum alloy casting material that contains 2.0 to 5.5 mass % of Cu, and 4.0 to 7.0 mass % of Si in which a content of Mg is 0.5 mass % or less, a content of Zn is 1.0 mass % or less, a content of Fe is 1.0 mass % or less, a content of Mn is 0.5 mass % or less and the balance is made of Al and inevitable impurities is used. The method for manufacturing an aluminum alloy member includes a heating and holding step of heating and holding the aluminum alloy casting material within a solid-liquid coexisting temperature region; and a quenching step of rapidly cooling the aluminum ally casting material after performing the heating and holding step.
    Type: Application
    Filed: February 5, 2019
    Publication date: September 19, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke YOKOTA, Hirotsune WATANABE, Makoto KIKUCHI, Hiroshi KAWAHARA, Yasushi IWATA, Jun YAOKAWA, Kazuma HIBI
  • Publication number: 20190283119
    Abstract: A core forming device is equipped with a kneading tank in which raw materials of a core are kneaded, a raw material supply unit that supplies the raw materials to the kneading tank, a mold that accommodates a kneaded material including the raw materials kneaded in the kneading tank and that forms the core, a piston that injects the kneaded material into the mold, a position sensor that detects a position of the piston, and a control unit that controls a supply amount of the raw materials supplied to the kneading tank from the raw material supply unit. The control unit determines the supply amount of the raw materials based on a difference between the position of the piston upon completion of injection and a reference position of the piston.
    Type: Application
    Filed: October 13, 2017
    Publication date: September 19, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Sintokogio, Ltd.
    Inventors: Katsutoshi OKUMURA, Hirotsune WATANABE, Shogo IZUMI, Hirotaka KURITA, Katsushige YAMAMOTO
  • Patent number: 10183322
    Abstract: A method of reusing core sand includes: crushing a core used for casting into granules; heating the granules at a temperature of 300° C. to 550° C.; causing the heated granules to collide against each other such that water glass used as a binder detaches from the core sand; and blowing air into a mixture of the water glass and the core sand, which are detached from each other, such that the core sand is separated and collected from the mixture due to a difference in specific gravity between the water glass and the core sand.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: January 22, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Yamashita, Hirotsune Watanabe, Masashi Morikawa
  • Patent number: 10099278
    Abstract: A mold-making device may include a stirring device including a stirring tank and at least one stirring blade. The stirring device may further include a packing port that is configured to open and close on a bottom of the stirring tank. The stirring device may stir a particulate aggregate and at least one additive by rotating the at least one stirring blade within the stirring tank to yield an admixture. A forming mold may communicate with the packing port and mold the admixture into a predetermined shape. A packing device may compress a surface of the admixture within the stirring tank and pack the admixture into the forming mold via the packing port.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: October 16, 2018
    Assignee: Sintokogio, Ltd.
    Inventors: Kazumasa Uchida, Masaomi Mitsutake, Hirotsune Watanabe, Takumi Maegawa, Masashi Morikawa, So Nakayama, Tomokazu Suda, Toshihiko Zenpo
  • Publication number: 20180221939
    Abstract: A method of reusing core sand includes crushing a core used for casting into granules; heating the granules at a temperature of 300° C. to 550° C.; causing the heated granules to collide against each other such that water glass used as a binder detaches from the core sand; and blowing air into a mixture of the water glass and the core sand, which are detached from each other, such that the core sand is separated and collected from the mixture due to a difference in specific gravity between the water glass and the core sand.
    Type: Application
    Filed: April 10, 2018
    Publication date: August 9, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke YAMASHITA, Hirotsune WATANABE, Masashi MORIKAWA
  • Patent number: 10035181
    Abstract: To provide an apparatus for reclaiming foundry sand and a method for reclaiming foundry sand that can effectively remove binders and so on that attach to returned foundry sand that has been used. Foundry sand that has been used is supplied from a chute for feeding sand 14A to a rotor 16. The rotor 16 is rotated by a driver 20 so that frictional force is generated on the sand in the rotor 16. Then, the sand in the rotor 16 is dropped into the container for washing with water 30 that is located below the rotor 16. In the container for washing with water 30, an agitator 34 is rotated by the driver 20 so that the sand in the container for washing with water 30 is agitated and washed with water.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: July 31, 2018
    Assignee: SINTOKOGIO, LTD.
    Inventors: Yusuke Kato, Toshihiko Zenpo, Tomohiro Aoki, Takehiko Matsumoto, Takumi Maegawa, Hirotsune Watanabe, Tomokazu Suda, Masaomi Mitsutake, Hisao Nakane