Patents by Inventor Masahiro Omata

Masahiro Omata 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: 9825513
    Abstract: A rectangular wire is wound on a stator core having a plurality of teeth and a plurality of slots. A plurality of rectangular wire elements is provided by cutting a rectangular wire into a predetermined length and bending into a substantial U-shape. A plurality of rectangular wire pieces configured to form a coil by connecting predetermined end portions of the rectangular wire elements is molded as a sub-assembly. Each of the plurality of the rectangular wire elements is inserted into a predetermined pair of the slots from a first end face of the stator core such that the respective end portions of the rectangular wire elements project from a second end face of the stator core. The rectangular wire pieces of the sub-assembly are fixed to the end portions of the rectangular wire elements, thereby manufacturing a stator coil having compact coil ends easily.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: November 21, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takashi Sekikawa, Kimio Nishimura, Masahiro Omata, Yasushi Matsushita, Min Wu, Takumi Ohshima, Hiroaki Shibukawa, Koji Higaki, Kunitomo Ishiguro, Yuhei Yamane
  • Patent number: 9779871
    Abstract: A manufacturing device for cleft magnets comprises a cleaving mechanism for cleaving a magnet plate by applying a pressing force to the magnet plate corresponding to a back of a groove formed on one surface of the magnet plate and a carry-in mechanism for carrying the magnet plate to a cleaving position by the cleaving mechanism. By comprising a foreign matter removal mechanism for removing a foreign matter adhering to the magnet plate before the magnet plate is carried to the cleaving position by the carry-in mechanism, the foreign matter adhering to the magnet plate is removed before cleaving.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: October 3, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hiroaki Shibukawa, Kimio Nishimura, Masahiro Omata, Takashi Sekikawa, Yasushi Matsushita, Kiyoshi Hasegawa, Akihisa Hori, Takumi Ohshima, Michito Kishi, Hideki Watanabe
  • Publication number: 20170187271
    Abstract: A rectangular wire is wound on a stator core having a plurality of teeth and a plurality of slots. A plurality of rectangular wire elements is provided by cutting a rectangular wire into a predetermined length and bending into a substantial U-shape. A plurality of rectangular wire pieces configured to form a coil by connecting predetermined end portions of the rectangular wire elements is molded as a sub-assembly. Each of the plurality of the rectangular wire elements is inserted into a predetermined pair of the slots from a first end face of the stator core such that the respective end portions of the rectangular wire elements project from a second end face of the stator core. The rectangular wire pieces of the sub-assembly are fixed to the end portions of the rectangular wire elements, thereby manufacturing a stator coil having compact coil ends easily.
    Type: Application
    Filed: June 9, 2014
    Publication date: June 29, 2017
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Takashi SEKIKAWA, Kimio NISHIMURA, Masahiro OMATA, Yasushi MATSUSHITA, Min WU, Takumi OHSHIMA, Hiroaki SHIBUKAWA, Koji HIGAKI, Kunitomo ISHIGURO, Yuhei YAMENE
  • Patent number: 9625539
    Abstract: A magnet evaluating device evaluates an evaluation magnet by passing the evaluation magnet, which is formed by connecting a plurality of magnetic sections with insulating material in between, and a master magnet of the same form through an alternating magnetic field generated by an excitation coil, measuring the eddy current occurring in the magnetic section as voltage or current occurring in a detection coil and comparing the measured value for the evaluation magnet and the measured value for the master magnet.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: April 18, 2017
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Koji Higaki, Kimio Nishimura, Masahiro Omata, Hideki Watanabe, Yasuhisa Koike, Takashi Sekikawa, Yasushi Matsushita, Akihisa Hori, Takumi Ohshima, Michito Kishi, Kiyoshi Hasegawa, Hiroaki Shibukawa, Kazuhiro Takaichi, Hideo Sakuyama, Yuhei Yamane, Yoshito Ozawa
  • Publication number: 20160011282
    Abstract: A magnet evaluating device evaluates an evaluation magnet by passing the evaluation magnet, which is formed by connecting a plurality of magnetic sections with insulating material in between, and a master magnet of the same form through an alternating magnetic field generated by an excitation coil, measuring the eddy current occurring in the magnetic section as voltage or current occurring in a detection coil and comparing the measured value for the evaluation magnet and the measured value for the master magnet.
    Type: Application
    Filed: February 10, 2014
    Publication date: January 14, 2016
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Koji HIGAKI, Kimio NISHIMURA, Masahiro OMATA, Hideki WATANABE, Yasuhisa KOIKE, Takashi SEKIKAWA, Yasushi MATSUSHITA, Akihisa HORI, Takumi OHSHIMA, Michito KISHI, Kiyoshi HASEGAWA, Hiroaki SHIBUKAWA, Kazuhiro TAKAICHI, Hideo SAKUYAMA, Yuhei YAMANE, Yoshito OZAWA
  • Publication number: 20150270060
    Abstract: A manufacturing device for cleft magnets comprises a cleaving mechanism for cleaving a magnet plate by applying a pressing force to the magnet plate corresponding to a back of a groove formed on one surface of the magnet plate and a carry-in mechanism for carrying the magnet plate to a cleaving position by the cleaving mechanism. By comprising a foreign matter removal mechanism for removing a foreign matter adhering to the magnet plate before the magnet plate is carried to the cleaving position by the carry-in mechanism, the foreign matter adhering to the magnet plate is removed before cleaving.
    Type: Application
    Filed: September 19, 2013
    Publication date: September 24, 2015
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Hiroaki Shibukawa, Kimio Nishimura, Masahiro Omata, Takashi Sekikawa, Yasushi Matsushita, Kiyoshi Hasegawa, Akihisa Hori, Takumi Ohshima, Michito Kishi, Hideki Watanabe
  • Patent number: 8771902
    Abstract: A fuel cell is manufactured using a polymer electrolyte membrane (1). A catalyst layer (12) is formed at fixed intervals on the surface of the strip-form polymer electrolyte membrane (1) in the lengthwise direction thereof, and conveyance holes (10) are formed in series at fixed intervals on the two side portions thereof. By rotating a conveyance roller (32) comprising on its outer periphery projections which engage with the holes (10), the polymer electrolyte membrane (1) is fed from a reel (9). A GDL (6) and a separator (7) are adhered to the fed polymer electrolyte membrane (1) at a predetermined processing timing based on the rotation speed of the conveyance roller (32), and thus the fuel cell is manufactured efficiently while the GDL (6) and separator (7) are laminated onto the catalyst layer (12) accurately.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: July 8, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takeharu Kuramochi, Masanori Iwamoto, Masahiko Katsu, Kaoru Eguchi, Masahiro Omata, Hideto Kanafusa, Yoshiki Muto
  • Patent number: 8470498
    Abstract: A fuel cell is manufactured using a polymer electrolyte membrane (1). A catalyst layer (12) is formed at fixed intervals on the surface of the strip-form polymer electrolyte membrane (1) in the lengthwise direction thereof, and conveyance holes (10) are formed in series at fixed intervals on the two side portions thereof. By rotating a conveyance roller (32) comprising on its outer periphery projections which engage with the holes (10), the polymer electrolyte membrane (1) is fed from a reel (9). A GDL (6) and a separator (7) are adhered to the fed polymer electrolyte membrane (1) at a predetermined processing timing based on the rotation speed of the conveyance roller (32), and thus the fuel cell is manufactured efficiently while the GDL (6) and separator (7) are laminated onto the catalyst layer (12) accurately.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: June 25, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takeharu Kuramochi, Masanori Iwamoto, Masahiko Katsu, Kaoru Eguchi, Masahiro Omata, Hideto Kanafusa, Yoshiki Muto
  • Patent number: 8247137
    Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: August 21, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akira Fujiki, Yukihiro Maekawa, Takeharu Kuramochi, Masahiko Katsu, Takayuki Hirao, Takeshi Shimizu, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Yoshiki Muto, Kaoru Eguchi, Masahiro Omata, Hiroshi Saitou
  • Publication number: 20110236801
    Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).
    Type: Application
    Filed: June 10, 2011
    Publication date: September 29, 2011
    Inventors: Akira Fujiki, Yukihiro Maekawa, Takeharu Kuramochi, Masahiko Katsu, Takayuki Hirao, Takeshi Shimizu, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Yoshiki Muto, Kaoru Eguchi, Masahiro Omata, Hiroshi Saitou
  • Publication number: 20110229802
    Abstract: A fuel cell is manufactured using a polymer electrolyte membrane (1). A catalyst layer (12) is formed at fixed intervals on the surface of the strip-form polymer electrolyte membrane (1) in the lengthwise direction thereof, and conveyance holes (10) are formed in series at fixed intervals on the two side portions thereof. By rotating a conveyance roller (32) comprising on its outer periphery projections which engage with the holes (10), the polymer electrolyte membrane (1) is fed from a reel (9). A GDL (6) and a separator (7) are adhered to the fed polymer electrolyte membrane (1) at a predetermined processing timing based on the rotation speed of the conveyance roller (32), and thus the fuel cell is manufactured efficiently while the GDL (6) and separator (7) are laminated onto the catalyst layer (12) accurately.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 22, 2011
    Inventors: Takeharu KURAMOCHI, Masanori Iwamoto, Masahiko Katsu, Kaoru Eguchi, Masahiro Omata, Hideto Kanafusa, Yoshiki Muto
  • Publication number: 20110229801
    Abstract: A fuel cell is manufactured using a polymer electrolyte membrane (1). A catalyst layer (12) is formed at fixed intervals on the surface of the strip-form polymer electrolyte membrane (1) in the lengthwise direction thereof, and conveyance holes (10) are formed in series at fixed intervals on the two side portions thereof. By rotating a conveyance roller (32) comprising on its outer periphery projections which engage with the holes (10), the polymer electrolyte membrane (1) is fed from a reel (9). A GDL (6) and a separator (7) are adhered to the fed polymer electrolyte membrane (1) at a predetermined processing timing based on the rotation speed of the conveyance roller (32), and thus the fuel cell is manufactured efficiently while the GDL (6) and separator (7) are laminated onto the catalyst layer (12) accurately.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 22, 2011
    Inventors: Takeharu KURAMOCHI, Masanori Iwamoto, Masahiko Katsu, Kaoru Eguchi, Masahiro Omata, Hideto Kanafusa, Yoshiki Muto
  • Patent number: 7993798
    Abstract: A fuel cell is manufactured using a polymer electrolyte membrane (1). A catalyst layer (12) is formed at fixed intervals on the surface of the strip-form polymer electrolyte membrane (1) in the lengthwise direction thereof, and conveyance holes (10) are formed in series at fixed intervals on the two side portions thereof. By rotating a conveyance roller (32) comprising on its outer periphery projections which engage with the holes (10), the polymer electrolyte membrane (1) is fed from a reel (9). A GDL (6) and a separator (7) are adhered to the fed polymer electrolyte membrane (1) at a predetermined processing timing based on the rotation speed of the conveyance roller (32), and thus the fuel cell is manufactured efficiently while the GDL (6) and separator (7) are laminated onto the catalyst layer (12) accurately.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: August 9, 2011
    Assignee: Nissan Motor Co., Ltd
    Inventors: Takeharu Kuramochi, Masanori Iwamoto, Masahiko Katsu, Kaoru Eguchi, Masahiro Omata, Hideto Kanafusa, Yoshiki Muto
  • Patent number: 7981572
    Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: July 19, 2011
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akira Fujiki, Yukihiro Maekawa, Takeharu Kuramochi, Masahiko Katsu, Takayuki Hirao, Takeshi Shimizu, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Yoshiki Muto, Kaoru Eguchi, Masahiro Omata, Hiroshi Saitou
  • Patent number: 7794306
    Abstract: An apparatus and method for surface finishing a workpiece is disclosed as including a workpiece supporting mechanism supporting a workpiece having a target shaped periphery with a given width to be surface finished and a tool holder holding a surface finish tool in abutting contact with the target shaped periphery of the workpiece. A pressure applying mechanism is operative to apply a pressure force to the surface finish tool through the tool holder to cause the surface finish tool to be held in pressured contact with the target shaped periphery, with the pressure force exhibiting a given distribution pattern depending upon an axial direction of the workpiece. A drive mechanism rotates the workpiece to allow the surface finish tool to surface finish the target shaped periphery into a given geometrical profile, variably contoured along an axis of the workpiece depending on the given pressure distribution pattern.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: September 14, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomohiro Kondo, Masahiko Iizumi, Masahiro Omata, Kiyoshi Hasegawa, Takashi Ogino, Takafumi Watanabe, Yoshiyuki Chida, Yasushi Matsushita, Kazuo Takeda
  • Patent number: 7413498
    Abstract: A film feeder (FF1) feeds a film (1), a first drive (20) rotates a work (W), a second drive (30) moves the work (W) relative to the film (1), a shoe set handler (40) handles the shoe set (2) to press the film (1) against the work (W), and a deterioration delayer (C) is configured to delay an abrasivity deterioration of the film (1).
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: August 19, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masahiro Omata, Masahiko Iizumi, Kiyoshi Hasegawa, Takashi Ogino, Tomohiro Kondo, Kazuo Takeda, Takafumi Watanabe, Yoshiyuki Chida, Yasushi Matsushita
  • Publication number: 20070271770
    Abstract: Separators (5A, 5B, 6) and membrane-electrode assemblies (2) of a fuel cell stack (1) are alternately stacked in a guide box (40). The separators (5A, 5B, 6) each have groove-like gas paths (10A, 10B). Powder of an adhesive agent (7) is adhered in advance to the surfaces of the separators (5A, 5B, 6), except the gas paths (10A, 10B), through photosensitive drums (31A, 31B) to which the powder is adsorbed in a given pattern. The separators (5A, 5B, 6) and the membrane-electrode assemblies (2), stacked in the guide box (40), are heated and compressed by a press (43) and heaters (40C) to obtain a unitized fuel cell stack (1).
    Type: Application
    Filed: October 28, 2004
    Publication date: November 29, 2007
    Inventors: Akira Fujiki, Yukihiro Maekawa, Takeharu Kuramochi, Masahiko Katsu, Takayuki Hirao, Takeshi Shimizu, Masanori Iwamoto, Sadao Miki, Haruhiko Suzuki, Yoshiki Muto, Kaoru Eguchi, Masahiro Omata, Hiroshi Saitou
  • Publication number: 20070116999
    Abstract: A fuel cell is manufactured using a polymer electrolyte membrane (1). A catalyst layer (12) is formed at fixed intervals on the surface of the strip-form polymer electrolyte membrane (1) in the lengthwise direction thereof, and conveyance holes (10) are formed in series at fixed intervals on the two side portions thereof. By rotating a conveyance roller (32) comprising on its outer periphery projections which engage with the holes (10), the polymer electrolyte membrane (1) is fed from a reel (9). A GDL (6) and a separator (7) are adhered to the fed polymer electrolyte membrane (1) at a predetermined processing timing based on the rotation speed of the conveyance roller (32), and thus the fuel cell is manufactured efficiently while the GDL (6) and separator (7) are laminated onto the catalyst layer (12) accurately.
    Type: Application
    Filed: November 2, 2004
    Publication date: May 24, 2007
    Inventors: Takeharu Kuramochi, Masanori Iwamoto, Masahiko Katsu, Kaoru Eguchi, Masahiro Omata, Hideto Kanafusa, Yoshiki Muto
  • Patent number: 7033245
    Abstract: A lapping apparatus lapping a work having a pre-machined surface comprises a lapping film which includes a thin substrate having a surface provided with abrasive grains, a shoe disposed at a back surface side of the lapping film, a shoe driving unit which drives the shoe toward the work in order to press the abrasive-grained surface of the lapping film to the pre-machined surface of the work, a rotational driving unit which drives the work rotationally, a detecting unit which detects the position of the rotating work in the rotating direction, and a controlling unit which controls the pressing force of the shoe driving unit so as to drive the shoe correspondingly to the position of the work in the rotating direction during machining.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: April 25, 2006
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kiyoshi Hasegawa, Masahiko Iizumi, Masahiro Omata, Takashi Ogino, Tomohiro Kondo, Kazuo Takeda, Takafumi Watanabe, Yoshiyuki Chida, Yasushi Matsushita
  • Publication number: 20040166776
    Abstract: An apparatus and method for surface finishing a workpiece is disclosed as including a workpiece supporting mechanism supporting a workpiece having a target shaped periphery with a given width to be surface finished and a tool holder holding a surface finish tool in abutting contact with the target shaped periphery of the workpiece. A pressure applying mechanism is operative to apply a pressure force to the surface finish tool through the tool holder to cause the surface finish tool to be held in pressured contact with the target shaped periphery, with the pressure force exhibiting a given distribution pattern depending upon an axial direction of the workpiece. A drive mechanism rotates the workpiece to allow the surface finish tool to surface finish the target shaped periphery into a given geometrical profile, variably contoured along an axis of the workpiece depending on the given pressure distribution pattern.
    Type: Application
    Filed: February 6, 2004
    Publication date: August 26, 2004
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tomohiro Kondo, Masahiko Iizumi, Masahiro Omata, Kiyoshi Hasegawa, Takashi Ogino, Takafumi Watanabe, Yoshiyuki Chida, Yasushi Matsushita, Kazuo Takeda