Patents by Inventor Ikuo Ozaki

Ikuo Ozaki 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: 20200028404
    Abstract: An electric motor includes: a stator that has a stator core and has coils that are formed of an electric wire wound on the stator core and form a plurality of phases; a resin covering the stator; and a wire break facilitator that facilitates the electric wire to break at a time of abnormality. In the electric motor having the stator in which the coils are covered with molding resin, the wire break facilitator is attached to at least one of: a transition wire part between the coils wound on the stator core; a connection part at a neutral point; and a connection part of a lead wire.
    Type: Application
    Filed: January 26, 2018
    Publication date: January 23, 2020
    Inventors: YOSHIKAZU YAMAGATA, AKIHIKO WATANABE, TAKANORI AMAYA, IKUO OZAKI
  • Patent number: 9548633
    Abstract: Provided is a stator of a motor which is capable of reducing an iron loss generated in a motor and thereby attaining a high-efficient motor. A stator of a motor comprises a yoke of a tubular shape; and teeth each of which includes an extending portion extending inward in a radial direction of the yoke from the yoke and an increased-width portion formed at a tip end of the extending portion so as to have a greater width than the extending portion in a circumferential direction of the yoke; wherein the extending portion has a narrower portion having a smaller width than a remaining portion of the extending portion.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: January 17, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
  • Patent number: 9472809
    Abstract: Provided is a lithium ion secondary battery capable of realizing a high energy density while maintaining output. A lithium ion secondary battery D1 according to the present invention includes an electrode having an active material mix layer 31 on both surfaces of a current collector 35. The active material mix layer 31 has a smaller void ratio in a current collector side region 34 of the active material mix layer 31 and a surface side region 32 of the active material mix layer 31 than in an intermediate region 33 between the current collector side region 34 and the surface side region 32 of the active material mix layer 31.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: October 18, 2016
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ikuo Ozaki, Yoshimasa Koishikawa
  • Patent number: 9444292
    Abstract: An electric motor according to the present invention includes stator (10) which has ring-shaped yoke (11) and a plurality of teeth (12) disposed at the inner peripheral part of yoke (11). Yoke (11) and teeth (12) configure slots (13) in which windings (15) are wound via electric insulator (14). Moreover, the motor includes rotor (20) that is rotatably held and faces the inner periphery of stator (10) via a slight gap. The rotor includes rotor iron core (21) having permanent magnets (22) that are disposed in the inside or on the surface of the core. Furthermore, a plurality of yoke recesses (16) is disposed only in the yoke (11) parts of slots (13).
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: September 13, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Toshiyuki Tamamura, Ikuo Ozaki
  • Patent number: 9373981
    Abstract: Provided is a stator of a motor which is capable of reducing a loss generated in a motor and thereby attaining a high-efficient motor, and a motor including the stator. A stator of a motor comprises a stator core including a plurality of plate members stacked together; the stator core including: a yoke of a tubular shape; and teeth each of which includes an extending portion extending inward in a radial direction of the yoke from the yoke and an increased-width portion formed at a tip end of the extending portion so as to have a greater width than the extending portion in a circumferential direction of the yoke; wherein the extending portion has a constant-width portion extending radially in a straight-line shape so as to have a constant circumferential width, a narrower portion having a smaller circumferential width than the constant-width portion, and a clamp portion for securing the plurality of plate members to each other; and wherein the clamp portion is provided in the constant-width portion.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: June 21, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
  • Patent number: 9356478
    Abstract: A stator of a motor comprises a stator core including a plurality of plate members stacked together; the stator core including: a yoke of a tubular shape; and teeth each of which includes an extending portion extending inward in a radial direction of the yoke from the yoke and an increased-width portion formed at a tip end of the extending portion so as to have a greater width than the extending portion in a circumferential direction of the yoke; wherein the extending portion has a constant-width portion extending radially in a straight-line shape so as to have a constant circumferential width, a narrower portion having a circumferential width smaller than a circumferential width of the constant-width portion, and a clamp portion for securing the plurality of plate members to each other; and wherein at least a portion of the clamp portion is located in the narrower portion.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: May 31, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
  • Patent number: 8900757
    Abstract: A positive electrode capable of achieving both of high volumetric energy density and high volumetric power density and a lithium ion secondary battery using the same are provided. A lithium ion secondary battery includes a positive electrode including a current collector with a positive active material mixture layer applied on both faces thereof, the positive active material mixture layer including active material particles, conductive additive particles and a binder. The active material particles used have a value D of an average particle diameter D50 of the active material particles in the range from 1 to 10 ?m. The ratio b/a of the volume fraction b of the vacancy volume in the positive active material mixture layer to the volume fraction a of the active material particles in the positive active material mixture layer is in the range of ?0.01D+0.57?b/a??0.01D+0.97.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: December 2, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ikuo Ozaki, Yoshimasa Koishikawa, Yoshihisa Okuda, Yuki Takei
  • Publication number: 20140348673
    Abstract: An electric motor according to the present invention includes stator (10) which has ring-shaped yoke (11) and a plurality of teeth (12) disposed at the inner peripheral part of yoke (11). Yoke (11) and teeth (12) configure slots (13) in which windings (15) are wound via electric insulator (14). Moreover, the motor includes rotor (20) that is rotatably held and faces the inner periphery of stator (10) via a slight gap. The rotor includes rotor iron core (21) having permanent magnets (22) that are disposed in the inside or on the surface of the core. Furthermore, a plurality of yoke recesses (16) is disposed only in the yoke (11) parts of slots (13).
    Type: Application
    Filed: April 29, 2014
    Publication date: November 27, 2014
    Applicant: Panasonic Corporation
    Inventors: Toshiyuki TAMAMURA, Ikuo OZAKI
  • Publication number: 20140184015
    Abstract: A stator of a motor comprises a stator core including a plurality of plate members stacked together; the stator core including: a yoke of a tubular shape; and teeth each of which includes an extending portion extending inward in a radial direction of the yoke from the yoke and an increased-width portion formed at a tip end of the extending portion so as to have a greater width than the extending portion in a circumferential direction of the yoke; wherein the extending portion has a constant-width portion extending radially in a straight-line shape so as to have a constant circumferential width, a narrower portion having a circumferential width smaller than a circumferential width of the constant-width portion, and a clamp portion for securing the plurality of plate members to each other; and wherein at least a portion of the clamp portion is located in the narrower portion.
    Type: Application
    Filed: July 24, 2012
    Publication date: July 3, 2014
    Applicant: Panasonic Corporation
    Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
  • Publication number: 20140127572
    Abstract: Provided is a lithium ion secondary battery capable of realizing a high energy density while maintaining output. A lithium ion secondary battery D1 according to the present invention includes an electrode having an active material mix layer 31 on both surfaces of a current collector 35. The active material mix layer 31 has a smaller void ratio in a current collector side region 34 of the active material mix layer 31 and a surface side region 32 of the active material mix layer 31 than in an intermediate region 33 between the current collector side region 34 and the surface side region 32 of the active material mix layer 31.
    Type: Application
    Filed: September 2, 2011
    Publication date: May 8, 2014
    Applicant: HITACHI VEHICLE ENERGY, LTD
    Inventors: Ikuo Ozaki, Yoshimasa Koishikawa
  • Publication number: 20140055001
    Abstract: Provided is a stator of a motor which is capable of reducing a loss generated in a motor and thereby attaining a high-efficient motor, and a motor including the stator.
    Type: Application
    Filed: April 18, 2012
    Publication date: February 27, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
  • Publication number: 20130342070
    Abstract: Provided is a stator of a motor which is capable of reducing an iron loss generated in a motor and thereby attaining a high-efficient motor. A stator of a motor comprises a yoke of a tubular shape; and teeth each of which includes an extending portion extending inward in a radial direction of the yoke from the yoke and an increased-width portion formed at a tip end of the extending portion so as to have a greater width than the extending portion in a circumferential direction of the yoke; wherein the extending portion has a narrower portion having a smaller width than a remaining portion of the extending portion.
    Type: Application
    Filed: December 6, 2011
    Publication date: December 26, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
  • Publication number: 20130342068
    Abstract: A plurality of protruding portions each having a predetermined width in a circumferential direction are respectively provided at a predetermined interval along an outer periphery of a stator, and through-holes are formed at both ends in the circumferential direction of the protruding portions. A total length of the widths, which the protruding portions respectively have, in the circumferential direction is set equal to or less than 25% of an outer circumference of the stator. With this structure and by virtue of the through-holes, a compressive stress built up in an inner periphery of the stator due to pressing forces imposed on center areas of the protruding portions can be distribute toward the outer periphery of the stator.
    Type: Application
    Filed: February 1, 2012
    Publication date: December 26, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
  • Publication number: 20120219855
    Abstract: A positive electrode capable of achieving both of high volumetric energy density and high volumetric power density and a lithium ion secondary battery using the same are provided. A lithium ion secondary battery includes a positive electrode including a current collector with a positive active material mixture layer applied on both faces thereof, the positive active material mixture layer including active material particles, conductive additive particles and a binder. The active material particles used have a value D of an average particle diameter D50 of the active material particles in the range from 1 to 10 ?m. The ratio b/a of the volume fraction b of the vacancy volume in the positive active material mixture layer to the volume fraction a of the active material particles in the positive active material mixture layer is in the range of ?0.01D+0.57?b/a??0.01D+0.97.
    Type: Application
    Filed: February 16, 2012
    Publication date: August 30, 2012
    Inventors: Ikuo Ozaki, Yoshimasa Koishikawa, Yoshihisa Okuda, Yuki Takei
  • Patent number: 8194270
    Abstract: An object of the present invention is to provide a printing control method and a printing controller which are capable of performing high-quality printing in a short period of time, and which are capable of reducing human error. To achieve this end, the printing control method is used to control a printing system, which is equipped with a server to store printing data which contains platemaking data and related information, a printing machine equipped with a plurality of printing presses, a terminal unit for acquiring the printing image data and outputting command information to the printing machine, detectors for detecting a state of a printed page, and controllers for controlling the printing presses based on the printing data and detection information.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: June 5, 2012
    Assignee: Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd.
    Inventors: Shuichi Takemoto, Norifumi Tasaka, Ikuo Ozaki
  • Publication number: 20110310417
    Abstract: It is an object of the invention to provide a printing evaluation information displaying apparatus and method for a printing press wherein the printing operator can grasp printing evaluation information and printing press operation information to be used as parameters of quality management at the same time.
    Type: Application
    Filed: August 28, 2007
    Publication date: December 22, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Shuichi Takemoto, Ikuo Ozaki, Norifumi Tasaka
  • Publication number: 20100251111
    Abstract: The invention relates to a printing simulation system and a printing simulation method as well as a printing management system. The printing simulation system includes a display controlling apparatus for simulation-displaying the picture of a result where a picture obtained from the picture data to be printed is printed under a printing condition obtained from printing condition data on a monitor screen. A displaying mode which is a displaying mode where a plurality of printing conditions are applied and in which results where one picture is divided into a plurality of regions and printing is carried out in the divided regions under individual printing conditions are simulation-displayed is provided as a simulation-displaying mode by the display controlling apparatus.
    Type: Application
    Filed: October 30, 2008
    Publication date: September 30, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Ikuo Ozaki, Shuichi Takemoto, Norifumi Tasaka
  • Patent number: 7755797
    Abstract: In a picture color tone control method and apparatus for a printing press, in order to make it possible to use an IRGB densitometer to perform color tone control even when printing is performed with a density which exceeds an estimated maximum color space, a target color mixture halftone density for each ink supplying unit width when a printing picture is divided with an ink supplying unit width of ink supplying apparatus 6, 7 is set, and an actual color mixture halftone density for each ink supplying unit width of an actually printed sheet obtained by printing is measured using an IRGB densitometer 1. The color mixture halftone densities are individually converted into tone values. Thereupon, for the conversion into actual tone values, the publicly known Neugebauer expression wherein the Yule-Nielsen coefficient n is set to such a value that the tone values and the color mixture halftone density value have a substantially linear relationship to each other is used.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: July 13, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Ikuo Ozaki, Syuuichi Takemoto, Norifumi Tasaka
  • Patent number: 7755798
    Abstract: The invention relates to picture color tone control for a printing press. A target color mixture halftone density for each ink supplying unit width when a printing picture is divided with an ink supplying unit width of ink supplying apparatus 6, 7 is set, and an actual color mixture halftone density for each ink supplying unit width of an actually printed sheet obtained by printing is measured using an IRGB densitometer 1. The color mixture halftone densities are individually converted into tone values. A changing ratio for the converted target tone values is set suitably and is reflected on the target tone values and then converted into a monochromatic halftone density. Then, a solid density difference corresponding to a difference between the target monochromatic halftone density and an actual monochromatic halftone density is determined, and the ink supplying amount is adjusted for each ink supplying unit width in response to the solid density difference.
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: July 13, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd
    Inventors: Ikuo Ozaki, Syuuchi Takemoto, Norifumi Tasaka
  • Publication number: 20100002246
    Abstract: A printing simulation method and apparatus, a picture color tone controlling method and method for a printing press and a printing press are disclosed by which, before printing is carried out, the color tone can be confirmed readily so that a demand for a print color tone can be satisfied precisely while appearance of broke is suppressed. A printing characteristic of a printing press and data of a printing picture to be printed by the printing press are acquired, and an image of the printing picture obtained by simulating color by the printing press with the data of the printing picture converted using the printing characteristic of the printing press is displayed on a monitor screen. Then, while a sample of the printing picture is referred to, correction of the color state of the picture displayed on the monitor screen with respect to the density of the ink color upon printing is carried out so that the color tone of the picture displayed on the monitor screen approaches the color tone of the sample picture.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 7, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD
    Inventors: Ikuo Ozaki, Shuichi Takemoto, Norifumi Tasaka