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).
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Publication number: 20240063675Abstract: An insulator (10) includes: an annular outer peripheral portion (11); and a wound portion (50) which extends in a first direction that is a direction from the outer peripheral portion (11) toward a center of the outer peripheral portion and around which a wire (42) is wound. The wound portion (50) includes: an introduction portion (52) to which the wire (42) is introduced from the outer peripheral portion (11); an extend-around portion (51) around which the wire (42) introduced from the introduction portion (52) extends; and an isolation wall (60) which is located between the introduction portion (52) and the extend-around portion (51) in the first direction and by which an introduced portion of the wire (42) which is introduced at the introduction portion (52) and a first-turn portion of the wire (42) which is wound around the extend-around portion (51) are isolated from each other.Type: ApplicationFiled: December 15, 2021Publication date: February 22, 2024Inventors: Tomoyuki HATAKEYAMA, Ikuo OZAKI, Satoshi WADA
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Publication number: 20200028404Abstract: 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: ApplicationFiled: January 26, 2018Publication date: January 23, 2020Inventors: YOSHIKAZU YAMAGATA, AKIHIKO WATANABE, TAKANORI AMAYA, IKUO OZAKI
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Patent number: 9548633Abstract: 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: GrantFiled: December 6, 2011Date of Patent: January 17, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
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Patent number: 9472809Abstract: 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: GrantFiled: September 2, 2011Date of Patent: October 18, 2016Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Ikuo Ozaki, Yoshimasa Koishikawa
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Patent number: 9444292Abstract: 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: GrantFiled: April 29, 2014Date of Patent: September 13, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Toshiyuki Tamamura, Ikuo Ozaki
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Patent number: 9373981Abstract: 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: GrantFiled: April 18, 2012Date of Patent: June 21, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
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Patent number: 9356478Abstract: 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: GrantFiled: July 24, 2012Date of Patent: May 31, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
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Patent number: 8900757Abstract: 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: GrantFiled: February 16, 2012Date of Patent: December 2, 2014Assignee: Hitachi Automotive Systems, Ltd.Inventors: Ikuo Ozaki, Yoshimasa Koishikawa, Yoshihisa Okuda, Yuki Takei
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Publication number: 20140348673Abstract: 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: ApplicationFiled: April 29, 2014Publication date: November 27, 2014Applicant: Panasonic CorporationInventors: Toshiyuki TAMAMURA, Ikuo OZAKI
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Publication number: 20140184015Abstract: 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: ApplicationFiled: July 24, 2012Publication date: July 3, 2014Applicant: Panasonic CorporationInventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
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Publication number: 20140127572Abstract: 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: ApplicationFiled: September 2, 2011Publication date: May 8, 2014Applicant: HITACHI VEHICLE ENERGY, LTDInventors: Ikuo Ozaki, Yoshimasa Koishikawa
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Publication number: 20140055001Abstract: 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: ApplicationFiled: April 18, 2012Publication date: February 27, 2014Applicant: PANASONIC CORPORATIONInventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
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Publication number: 20130342068Abstract: 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: ApplicationFiled: February 1, 2012Publication date: December 26, 2013Applicant: PANASONIC CORPORATIONInventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
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Publication number: 20130342070Abstract: 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: ApplicationFiled: December 6, 2011Publication date: December 26, 2013Applicant: PANASONIC CORPORATIONInventors: Takashi Ogawa, Yuichi Yoshikawa, Ikuo Ozaki, Toshiyuki Tamamura, Hirokazu Yamauchi
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Publication number: 20120219855Abstract: 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: ApplicationFiled: February 16, 2012Publication date: August 30, 2012Inventors: Ikuo Ozaki, Yoshimasa Koishikawa, Yoshihisa Okuda, Yuki Takei
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Patent number: 8194270Abstract: 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: GrantFiled: June 30, 2006Date of Patent: June 5, 2012Assignee: Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd.Inventors: Shuichi Takemoto, Norifumi Tasaka, Ikuo Ozaki
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Publication number: 20110310417Abstract: 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: ApplicationFiled: August 28, 2007Publication date: December 22, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shuichi Takemoto, Ikuo Ozaki, Norifumi Tasaka
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Publication number: 20100251111Abstract: 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: ApplicationFiled: October 30, 2008Publication date: September 30, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Ikuo Ozaki, Shuichi Takemoto, Norifumi Tasaka
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Patent number: 7755798Abstract: 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: GrantFiled: November 11, 2005Date of Patent: July 13, 2010Assignee: Mitsubishi Heavy Industries, LtdInventors: Ikuo Ozaki, Syuuchi Takemoto, Norifumi Tasaka
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Patent number: 7755797Abstract: 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: GrantFiled: November 14, 2005Date of Patent: July 13, 2010Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Ikuo Ozaki, Syuuichi Takemoto, Norifumi Tasaka