Patents by Inventor Kazuyuki Hirata

Kazuyuki Hirata 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: 20240001684
    Abstract: A liquid container includes: a bag having flexibility configured to store liquid inside; a liquid outlet member attached to one end of the bag and having a liquid outlet section to discharge the liquid to a liquid ejecting apparatus; a spacer member disposed in the bag, the spacer member including a filter chamber in which a filter that filters the liquid is disposed; and a liquid outlet pipe disposed in the bag and coupled to the filter chamber and the liquid outlet member, the liquid outlet pipe being configured to flow the liquid filtered by the filter to the liquid outlet section. The liquid outlet pipe has flexibility.
    Type: Application
    Filed: July 3, 2023
    Publication date: January 4, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro KARASAWA, Kazuyuki HIRATA
  • Publication number: 20240001686
    Abstract: A liquid container includes: a bag having flexibility configured to store liquid inside; a liquid outlet member mounted on one end of the bag and having a liquid outlet section to discharge the liquid to a liquid ejecting apparatus; a gas absorption unit movably disposed in the bag and having (i) a space holding member that forms an internal space of the gas absorption unit, and (ii) a gas transmission film that defines an inside of the internal space and an outside with the internal space decompressed to a pressure lower than an atmospheric pressure; and a plurality of liquid outlet pipes coupled to the liquid outlet section and disposed in the bag, the plurality of liquid outlet pipes having an inlet, which are configured to allow the liquid introduced from the inlet to flow to the liquid outlet section. Lengths of the plurality of liquid outlet pipes are different.
    Type: Application
    Filed: July 3, 2023
    Publication date: January 4, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro KARASAWA, Kazuyuki HIRATA
  • Publication number: 20230256499
    Abstract: A transport device includes a moving mechanism and a plate. The moving mechanism includes a pinion, a conversion mechanism, which converts vertical motion of an upper die assembly into rotational motion of the pinion, and a rack, which is moved as the pinion rotates. The moving mechanism is configured to move, when the rack moves from the top dead center position to a bottom dead center position, the plate to a position that is away from a die apparatus in a conveying direction and is below a conveying surface. The pinion includes a toothless portion that does not mesh with the rack when the rack moves between the bottom dead center position and a middle position that is between the top dead center position and the bottom dead center position.
    Type: Application
    Filed: June 23, 2021
    Publication date: August 17, 2023
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki HIRATA, Ryota SASAKI, Masashi OHARA, Masato YASUE
  • Publication number: 20230249239
    Abstract: A workpiece production apparatus includes a stationary die assembly and a movable die assembly. The stationary die assembly includes a stationary die body and a die. The movable die assembly includes a movable die body, a shaping punch, a blanking punch, a first pushing member, and a second pushing member, which has a higher rigidity than the first pushing member. The workpiece production apparatus is configured to bring the movable die assembly close to the stationary die assembly, thereby sequentially performing pre-shaping of a plate, punching-out of a workpiece from the plate, and final shaping of the workpiece by pushing the shaping punch with a distal end of the second pushing member in conjunction with compressive deformation of the first pushing member.
    Type: Application
    Filed: May 28, 2021
    Publication date: August 10, 2023
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Publication number: 20230158923
    Abstract: A position controlling device controls the position of a loading platform. The loading platform includes a loading portion, a base portion, and a coupling portion. The base portion is provided below the loading portion in a manner of supporting the loading portion. The coupling portion couples the base portion and the loading portion with a restoring member between them. One of the upper part of the base portion and the lower part of the loading portion includes a spherical surface that is convex downward. The other one of the upper part of the base portion and the lower part of the loading portion includes a guide portion. The guide portion guides the base portion and the loading portion such that the base portion and the loading portion are movable relative to each other in a direction along the spherical surface.
    Type: Application
    Filed: November 9, 2022
    Publication date: May 25, 2023
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki HIRATA, Shigetomi HONDA
  • Publication number: 20230018269
    Abstract: Provided is a liquid container configured to be detachably attached to a printer body. The liquid container includes a liquid containing portion, a supplying passage member, and an adapter. The liquid containing portion is a portion for containing liquid. The supplying passage member has a supplying passage in liquid communication with the liquid containing portion, the liquid contained in the liquid containing portion being supplied toward the printer body through the supplying passage. The adapter is mounted on the supplying passage member and configured to couple the supplying passage to the printer body. The adapter and the supplying passage member are joined by snap fitting.
    Type: Application
    Filed: July 14, 2022
    Publication date: January 19, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro KARASAWA, Naoki NAITO, Yuji AOKI, Kazuyuki HIRATA, Kiyoteru KATSUKI
  • Publication number: 20220379569
    Abstract: A method for manufacturing a fuel cell separator includes heating a sheet, pressing the sheet using a first die, thereby forming the sheet so as to have a predetermined thickness, cooling, together with the first die, the sheet that has been formed so as to have the predetermined thickness, and pressing the sheet that has undergone the cooling using a second die, thereby forming a gas passage in the sheet. In the sheet, a content of a thermoplastic resin is greater than or equal to 20 weight percent and less than or equal to 30 weight percent and a content of the carbon material particles is greater than or equal to 70 weight percent and less than or equal to 80 weight percent. The heating the sheet includes heating the sheet to a temperature that is higher than a melting point of the thermoplastic resin.
    Type: Application
    Filed: May 24, 2022
    Publication date: December 1, 2022
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, TAKAGI CHEMICALS, INC.
    Inventors: Tatsuya NAGATA, Kazuyuki HIRATA, Yuki WAKIMOTO, Noriaki TAKAGI, Masakuni TAKAGI, Yuusuke NAGATANI, Daisuke WATANABE, Kazuo MATSUYAMA
  • Patent number: 11052667
    Abstract: A gas-absorbing apparatus disposed in a liquid housing that has a supply port portion for supplying the liquid to an external, includes a space retaining member that forms an internal space of the gas-absorbing apparatus, and a gas-permeable film that partitions off an inside of the internal space from an outside in a state where the internal space is depressurized to a pressure lower than atmospheric pressure, the gas-absorbing apparatus being separate from the supply port portion.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: July 6, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masahiro Karasawa, Kazuyuki Hirata
  • Patent number: 10967644
    Abstract: An exterior body for storing a liquid storage body including a first main film, a second main film, and a first side film that define an interior space containing a liquid, the first side film having a gusset portion having a fold, the exterior body including an outer shell that forms a storage space storing the liquid storage body, and a pressing portion that is provided in the outer shell, that presses the first side film, and that bend the gusset portion inward.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: April 6, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kazuyuki Hirata, Yuji Aoki, Hiroshi Nose
  • Patent number: 10843472
    Abstract: A liquid housing container includes a suppressing portion at one end portion of a first surface-portion film and one end portion of a second surface-portion film, and at another end portion of the first surface-portion film and another end portion of the second surface-portion film. The suppressing portion suppresses spreading of a gap between the one end portion of the first surface-portion film and the one end portion of the second surface-portion film, and spreading of a gap between the other end portion of the first surface-portion film and the other end portion of the second surface-portion film.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: November 24, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Keita Ichihara, Kazuyuki Hirata
  • Patent number: 10799928
    Abstract: A method for forming a metal sheet includes forming a metal sheet to have curved portions that are alternately continuous in a corrugated pattern and angled sidewall portions between top parts of adjoining curved portions by use of a pair of forming dies that are moved close to or away from each other. The forming includes bending the metal sheet by pressing a position corresponding to a boundary part between the top part and the sidewall portion of the metal sheet by a convex curved surface of the forming die by moving the pair of forming dies close to each other and thereafter forming the sidewall portions by compression.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: October 13, 2020
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki Hirata, Harutaka Oda
  • Publication number: 20200307229
    Abstract: A liquid storage container that is equipped in a liquid ejection apparatus and supplies liquid to the liquid ejection apparatus is provided. The liquid storage container includes: a liquid storage box forming an outer shell of the liquid storage container; and a liquid storage bag accommodated in the liquid storage box, the liquid storage bag having a flexibility for storing liquid therein, wherein regardless of a posture of the liquid storage box, a first inner circumferential length of the liquid storage bag in one cross-section is larger than a second inner circumferential length of the liquid storage box in the one cross-section.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 1, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro KARASAWA, Kazuyuki HIRATA, Yuji AOKI
  • Patent number: 10737315
    Abstract: A press die includes: a die base; a plurality of die members arranged on the die base so as to produce a forming surface; a plurality of shims each of which is interposed between the die base and each of the plurality of die members; and a frame that surrounds the die base, the plurality of die members, and the plurality of shims. Each of the plurality of shims has a hardness higher than the plurality of die members. A regulating means that carries out a regulation so that an amount of displacement of each of the plurality of die members caused by pressure applied during press forming becomes smaller in proportion to proximity of the die member to the frame is provided between the die base and the plurality of die members or provided on the die base.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: August 11, 2020
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki Hirata
  • Publication number: 20200164655
    Abstract: A gas-absorbing apparatus disposed in a liquid housing that has a supply port portion for supplying the liquid to an external, includes a space retaining member that forms an internal space of the gas-absorbing apparatus, and a gas-permeable film that partitions off an inside of the internal space from an outside in a state where the internal space is depressurized to a pressure lower than atmospheric pressure, the gas-absorbing apparatus being separate from the supply port portion.
    Type: Application
    Filed: November 25, 2019
    Publication date: May 28, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro KARASAWA, Kazuyuki HIRATA
  • Publication number: 20200122471
    Abstract: An exterior body for storing a liquid storage body including a first main film, a second main film, and a first side film that define an interior space containing a liquid, the first side film having a gusset portion having a fold, the exterior body including an outer shell that forms a storage space storing the liquid storage body, and a pressing portion that is provided in the outer shell, that presses the first side film, and that bend the gusset portion inward.
    Type: Application
    Filed: October 21, 2019
    Publication date: April 23, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazuyuki HIRATA, Yuji AOKI, Hiroshi NOSE
  • Publication number: 20200094566
    Abstract: A liquid housing container includes a suppressing portion at one end portion of a first surface-portion film and one end portion of a second surface-portion film, and at another end portion of the first surface-portion film and another end portion of the second surface-portion film. The suppressing portion suppresses spreading of a gap between the one end portion of the first surface-portion film and the one end portion of the second surface-portion film, and spreading of a gap between the other end portion of the first surface-portion film and the other end portion of the second surface-portion film.
    Type: Application
    Filed: September 20, 2019
    Publication date: March 26, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Keita ICHIHARA, Kazuyuki HIRATA
  • Patent number: 10507591
    Abstract: A workpiece manufacturing apparatus includes a punch, which is provided in a lower die assembly and punches out a workpiece from an unprocessed material, and an ejector, which is provided in an upper die assembly so as to be capable of approaching and moving away from the lower die assembly. The manufacturing apparatus further includes a spring, which is provided in the upper die assembly and urges the ejector toward the lower die assembly, and a locking device, which locks the ejector with respect to the upper die assembly at a position at which the punch punches out the workpiece and releases the ejector when the die assemblies are opened. The locking device includes an actuator, which is provided in the upper die assembly and slides a slider between a locking position, at which the ejector is locked, and a releasing position, at which the ejector is released.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: December 17, 2019
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki Hirata, Taira Ito
  • Patent number: 10486219
    Abstract: A metal plate punching method for forming a strip portion by punching a metal plate via shearing includes a former step for forming a first side of the strip portion in the metal plate by punching the metal plate and a latter step for forming the strip portion by forming a second side of the strip portion in the metal plate by punching the metal plate while retaining the first side.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: November 26, 2019
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki Hirata
  • Patent number: 10478886
    Abstract: A recess is formed in a plate-like workpiece. Then, an inner ejector is engaged with the recess to restrict deformation of a body portion. In this state, a flange is formed in the outer periphery of the workpiece. A processed product portion is then punched out.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: November 19, 2019
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki Hirata
  • Patent number: 10464331
    Abstract: The liquid container includes: a container main body including a containment chamber containing a liquid and has some walls including a front-end wall, a rear-end wall, and an upper-surface wall; a liquid outlet connected to a liquid-consuming device to flow out the liquid from the containment chamber to the liquid-consuming device; a liquid inlet on the upper-surface wall at a position closer to the rear-end wall and accepts injection of the liquid from outside of the container main body into the containment chamber; and a visual recognition portion that is provided on the rear-end wall and is see-through so that a position of a liquid surface of the liquid in the containment chamber is recognizable. The rear-end wall has scale marks as indexes of an amount of the liquid in the containment chamber on an outer wall surface and an inner wall surface.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: November 5, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Naoki Naito, Yuji Aoki, Kazuyuki Hirata, Hiroshi Nose, Keita Ichihara