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).

  • Patent number: 9440281
    Abstract: An upper die unit and a lower die unit are provided. One of the upper and lower die units includes a main punch and the other die unit includes an ejector, a slider and a biasing portion which is connected to the slider and biases the slider in a predetermined sliding direction S. A cam structure is disposed between the slider and the ejector and converts a movement of the ejector to a movement of the slider in a direction opposite to a predetermined sliding direction when the upper and lower die units are closed, and converts a movement of the slider to a movement of the ejector in a work ejecting direction when the upper and lower die units are opened. A position retaining portion is also provided which retains a position of the slider for a period of time.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: September 13, 2016
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki Hirata
  • Publication number: 20160137639
    Abstract: A compound represented by Formula [I]: or pharmaceutically acceptable salt thereof, wherein each symbol is as defined in the description.
    Type: Application
    Filed: October 25, 2013
    Publication date: May 19, 2016
    Inventors: Masayuki KOTOKU, Takaki MAEBA, Noriyoshi SEKI, Shintaro HIRASHIMA, Shingo FUJIOKA, Shingo OBIKA, Hiroshi YAMANAKA, Masahiro YOKOTA, Takayuki SAKAI, Kazuyuki HIRATA, Katsuya MAEDA, Makoto SHIOZAKI, Yuko SHINAGAWA, Taku IKENOGAMI, Satoki DOI, Takahiro OKA, Takuya MATSUO, Yoshihiro SUWA, Keisuke ITO, Satoru NOJI, Yoshinori HARA
  • Publication number: 20160067756
    Abstract: A plurality of protruding portions is formed in a metal plate material through a plurality of steps by use of forming tools each of which includes a die and a punch. An arrangement pitch between a concave portion and a convex portion for use in forming the protruding portions in the die and the punch that are used in a post-process is made narrower than an arrangement pitch between a concave portion and a convex portion for use in forming the protruding portions in the die and the punch that are used in a pre-process.
    Type: Application
    Filed: April 24, 2014
    Publication date: March 10, 2016
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Patent number: 9246360
    Abstract: A core is formed by laminating a plurality of core plates. Each of the core plates includes a joint portion for joining the core plates together in the laminated state. Each of the joint portions includes a fixing piece, a passage hole, a receiving portion, and an opening. Each of the fixing pieces is raised in the direction in which the core plates are laminated. Each of the passage holes receives the fixing piece of the corresponding adjacent one of the core plates. The fixing piece in the passage hole is bent to join the receiving portion to the adjacent core plate. Each of the openings receives the corresponding one of the fixing pieces to avoid interference with the fixing piece bent onto the receiving portion of another core plate.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: January 26, 2016
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki Hirata
  • Patent number: 9233409
    Abstract: A press die includes die blocks placed on a base and aligned in a frame. A wedge is located between the frame and one of the die blocks. The wedge produces a wedge effect of bringing the die blocks to an aligned and fixed state. A spacer is located between the base and the wedge to set the extent of the wedge effect to a predetermined level.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: January 12, 2016
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki Hirata, Yoshikazu Ichiko
  • Publication number: 20160006044
    Abstract: A separator for a fuel cell includes a thin metal plate, protrusions that are formed on the metal plate to be close to each other, and gas passages formed by the protrusions. Each gas passage has a first opening corresponding to an inlet and a second opening corresponding to an outlet. The gas passages include a first gas passage, which has a relatively low pressure loss of gas flow, and a second gas passage, which has a relatively high pressure loss of gas flow. The area of the first opening of the first gas passage is set to be smaller than the area of the first opening of the second gas passage.
    Type: Application
    Filed: June 24, 2015
    Publication date: January 7, 2016
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Patent number: 9227239
    Abstract: A forming die apparatus includes a first die on which a die surface is formed and a second die for pressing a workpiece placed on the first die. At least one of the first die and the second die is configured by assembling a plurality of die members. Each die member has a concave side surface facing another die member.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: January 5, 2016
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki Hirata, Taira Ito
  • Publication number: 20150290692
    Abstract: A protruding portion is formed in a metal plate material by use of a plurality of molding tools each of which has a die and a punch. In a first step, an initial protruding portion is formed in the metal plate material by use of a first molding tool. In this step, a top of the initial protruding portion is formed to be thinner than other parts. In a second step, a sidewall of the initial protruding portion is rolled out by use of a second molding tool, and the protruding portion is formed.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 15, 2015
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki Hirata, Takuma Watanabe, Hidekazu Sahara
  • Publication number: 20150266078
    Abstract: A metal plate stamping method is provided for cutting a metal plate, on which a bulging portion is formed through stamping, at a cutting area that is defined in a portion other than the bulging portion. The method includes forming a bead on the opposite side of the cutting area from the bulging portion and crushing the bead prior to the cutting of the metal plate.
    Type: Application
    Filed: March 3, 2015
    Publication date: September 24, 2015
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Publication number: 20150236358
    Abstract: A separator for a fuel cell includes a thin metal plate, a protrusion formed on the thin metal plate, a gas passage formed by the protrusion, and a trap that is formed by forming a recess in a wall portion of the protrusion such that the trap is provided in the gas passage to correspond to the recess.
    Type: Application
    Filed: February 13, 2015
    Publication date: August 20, 2015
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Publication number: 20150202856
    Abstract: A rotary lamination apparatus has a die assembly rotatable about an axis and a mounting table received in an axial hole extending through the die assembly. Through rotation of the die assembly, punched core pieces are mounted on the mounting table while being rotatively offset. A drive portion is employed to rotate the mounting table integrally with the die assembly about the axis of the die assembly.
    Type: Application
    Filed: March 27, 2015
    Publication date: July 23, 2015
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki HIRATA, Shirou Fujimura, Hajime Banno
  • Publication number: 20150174635
    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: Application
    Filed: December 11, 2014
    Publication date: June 25, 2015
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Publication number: 20150158075
    Abstract: Two press dies are formed by arranging a plurality of segments side by side to form die faces. The press dies are used to press a plate member. First and second joint portions are positioned differently between one of the press dies and the other of the press dies.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 11, 2015
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Publication number: 20150135794
    Abstract: A punched piece is formed by punching a metal plate by a punching portion including by a die and a punch. Before the punching, a preceding process portion provided in a stage previous to the punching portion forms a projection at an inner peripheral portion of a punch area of the metal plate that faces the die. Forming the projection cancels formation of shear droop at an edge of the punched piece in forming of the punched piece by punching of the metal plate.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 21, 2015
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kazuyuki HIRATA
  • Patent number: 9016345
    Abstract: A rotary lamination apparatus has a die assembly rotatable about an axis and a mounting table received in an axial hole extending through the die assembly. Through rotation of the die assembly, punched core pieces are mounted on the mounting table while being rotatively offset. A drive mechanism is employed to rotate the mounting table integrally with the die assembly about the axis of the die assembly.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: April 28, 2015
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Kazuyuki Hirata, Shirou Fujimura, Hajime Banno
  • Patent number: 9017506
    Abstract: A core of a rotating electrical machine is formed by laminating core plates, which are each formed by a plurality of core pieces. According to the method for manufacturing the core, a belt-like workpiece is first conveyed intermittently in its longitudinal direction. Then, while the workpiece is in a stopped state, side edges of a core piece are punched out. At a downstream position in the conveying direction of the workpiece, the remaining edges of the core piece are cut, so that the core piece is punched out. The punched out core pieces are lined up on a support. The core plate is thus formed, and the core pieces are laminated.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 28, 2015
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventor: Kazuyuki Hirata
  • Publication number: 20150070447
    Abstract: The liquid container includes a liquid containing body having a flexible bag-shaped liquid containing section configured to contain liquid and a supply member that is connected to the liquid containing section and has a supply port configured to supply the liquid from the liquid containing section to an outside, and a case member configured to contain the liquid containing body. The case member has a first surface in which an opening section is formed to expose the supply port, and a second surface opposed to the first surface. The case member further has opposing sections that are opposed through the liquid containing section and are configured to contact with the liquid containing section in a position of a +Y-direction, which is a direction from the first surface to the second surface, than a joint section between the liquid containing section and the supply member.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 12, 2015
    Inventors: Hiroshi NOSE, Kazuyuki HIRATA, Yuji AOKI
  • Patent number: 8915279
    Abstract: A rotary lamination apparatus includes a die, a punch, a rotation drive source, a mounting table, at least one proximity sensor, and a determining device. The punch punches core pieces from a thin plate material. The rotation drive source drives and rotates the die about the central axis of the die. The mounting table is arranged in the inner space formed by the die. The core pieces are rotated and laminated on the mounting table. The proximity sensor detects whether the die is in the proximity of a predetermined position in a non-contact manner after the die has stopped rotating. The determining device determines whether the die is stopped at the predetermined position based on a detection result from the proximity sensor.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: December 23, 2014
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventor: Kazuyuki Hirata
  • Publication number: 20140366378
    Abstract: A rolling-element bearing in which a rolling element is retained in each of retaining openings formed in a retainer and method for manufacturing the bearing are provided. Each retaining opening is defined by a pair of inner side faces facing each other, and a pair of inner end faces facing each other. In the manufacturing method, with a support die being brought into contact with one of the inner side faces and the inner end faces of one of the retaining openings, the outer and inner circumferential surfaces of the retainer are pressed by an outer punch and an inner punch. Accordingly, on at least one of the inner side faces and the inner end faces, a first retaining piece and a second retaining piece for preventing the rolling element from falling off are formed on the outer circumferential surface and the inner circumferential surface of the retainer, respectively.
    Type: Application
    Filed: August 28, 2014
    Publication date: December 18, 2014
    Inventor: Kazuyuki HIRATA
  • Publication number: 20140352393
    Abstract: A forming die apparatus includes a first die on which a die surface is formed and a second die for pressing a workpiece placed on the first die. At least one of the first die and the second die is configured by assembling a plurality of die members. Each die member has a concave side surface facing another die member.
    Type: Application
    Filed: May 22, 2014
    Publication date: December 4, 2014
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Kazuyuki HIRATA, Taira ITO