Patents by Inventor Keisuke Kawano

Keisuke Kawano 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: 20200189270
    Abstract: Provided is an inkjet recording device control method including: a printing object detection step of detecting a printing object; a charge control signal transmission step of transmitting signals for controlling charges of a plurality of nozzles at a timing when the printing object is detected in the printing object detection step and signals are received from all of a plurality of processing units; and a printing step of controlling the plurality of nozzles and performing printing on the basis of the signals for controlling the charges that have been transmitted in the charge signal transmission step.
    Type: Application
    Filed: August 21, 2017
    Publication date: June 18, 2020
    Inventors: Keisuke OKAWA, Takashi KAWANO, An KYU
  • Patent number: 7358636
    Abstract: An electric motor includes a housing that receives multiple magnets that are circumferentially arranged in the housing. A resilient member has two inserted portions that are respectively inserted into gaps formed among the magnets. For example, four inserted portions of the two resilient members are respectively inserted into four gaps formed among four magnets, so that the inserted portions are resiliently deformed in the gaps. The inserted portions apply force to the magnets such that the magnets are circumferentially spaced from each other. Thus, the four magnets are urged onto an inner wall of the housing by the two resilient members. As a result, movement of the magnets is restricted in both of the circumferential direction and the axial direction of the housing. Therefore, the magnets can be maintained in the housing using a simple structure without increasing the number of components.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: April 15, 2008
    Assignee: Denso Corporation
    Inventors: Makoto Suga, Keisuke Kawano, Motoya Ito, Kiyoshi Hirase
  • Patent number: 7071804
    Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: July 4, 2006
    Assignee: Denso Corporation
    Inventors: Keisuke Kawano, Hiroyuki Wakabayashi, Akimitsu Sugiura
  • Patent number: 6910654
    Abstract: A multi-layer coil is wound around a bobbin having a center pillar and a small and a large flanges connected to longitudinal ends of the center pillar. A winding space having a trapezoidal cross-section in a plane cut through the center axis of the bobbin is formed outside the center pillar between both flanges. To wind the multi-layer coil in this winding space, a turning position where a layer of the coil moves up to a higher layer is set by a position setter, and the turning position is automatically shifted layer by layer to form a sloped outer surface of the coil. The coil is wound in a shape fitting the trapezoidal winding space without reducing the winding speed. The space factor of the coil in the winding space is improved, making the coil compact in size.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: June 28, 2005
    Assignee: Denso Corporation
    Inventors: Keisuke Kawano, Noriyasu Inomata, Motoya Ito, Hiroyuki Yamamoto
  • Publication number: 20050116568
    Abstract: An electric motor includes a housing that receives multiple magnets that are circumferentially arranged in the housing. A resilient member has two inserted portions that are respectively inserted into gaps formed among the magnets. For example, four inserted portions of the two resilient members are respectively inserted into four gaps formed among four magnets, so that the inserted portions are resiliently deformed in the gaps. The inserted portions apply force to the magnets such that the magnets are circumferentially spaced from each other. Thus, the four magnets are urged onto an inner wall of the housing by the two resilient members. As a result, movement of the magnets is restricted in both of the circumferential direction and the axial direction of the housing. Therefore, the magnets can be maintained in the housing using a simple structure without increasing the number of components.
    Type: Application
    Filed: October 12, 2004
    Publication date: June 2, 2005
    Applicant: Denso Corporation
    Inventors: Makoto Suga, Keisuke Kawano, Motoya Ito, Kiyoshi Hirase
  • Patent number: 6650221
    Abstract: An ignition coil for an internal combustion engine is mainly made up of a transformer part and a control circuit part and a connecting part, and the transformer part is made up of a iron core which forms an open magnetic path, magnets, a secondary spool, a secondary coil, a primary spool and a primary coil. By respectively setting the cross-sectional area SC of the iron core between 39 to 54 mm2, the ratio of the cross-sectional area SM of the magnets with the cross-sectional area SC of the iron core in the 0.7 to 1.4 range, the ratio of the axial direction length LC of the iron core with the winding width L of the primary and secondary coils in the 0.9 to 1.2 range, and the winding width L in the 50 to 90 mm range, the primary energy produced in the primary coil can be increased without increasing the external diameter A of the case.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: November 18, 2003
    Assignee: Nippondenso Co., Ltd
    Inventors: Kazutoyo Oosuka, Masami Kojima, Keisuke Kawano
  • Publication number: 20030209627
    Abstract: A multi-layer coil is wound around a bobbin having a center pillar and a small and a large flanges connected to longitudinal ends of the center pillar. A winding space having a trapezoidal cross-section in a plane cut through the center axis of the bobbin is formed outside the center pillar between both flanges. To wind the multi-layer coil in this winding space, a turning position where a layer of the coil moves up to a higher layer is set by a position setter, and the turning position is automatically shifted layer by layer to form a sloped outer surface of the coil. The coil is wound in a shape fitting the trapezoidal winding space without reducing the winding speed. The space factor of the coil in the winding space is improved, making the coil compact in size.
    Type: Application
    Filed: April 14, 2003
    Publication date: November 13, 2003
    Inventors: Keisuke Kawano, Noriyasu Inomata, Motoya Ito, Hiroyuki Yamamoto
  • Publication number: 20030122645
    Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.
    Type: Application
    Filed: December 17, 2002
    Publication date: July 3, 2003
    Applicant: DENSO CORPORATION
    Inventors: Kazutoyo Oosuka, Keisuke Kawano, Hiroyuki Wakabayashi, Akimitsu Sugiura, Tomonori Ishikawa, Naruhiko Inayoshi, Masahiko Aoyama, Tomonari Chiba, Katsuhisa Kato
  • Patent number: 6525636
    Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: February 25, 2003
    Assignee: Denso Corporation
    Inventors: Kazutoyo Oosuka, Keisuke Kawano, Hiroyuki Wakabayashi, Akimitsu Suguira, Naruhiko Inayosi, Tomonari Chiba, Katsuhisa Kato
  • Publication number: 20020057185
    Abstract: An ignition coil for an internal combustion engine is mainly made up of a transformer part and a control circuit part and a connecting part, and the transformer part is made up of a iron core which forms an open magnetic path, magnets, a secondary spool, a secondary coil, a primary spool and a primary coil. By respectively setting the cross-sectional area SC of the iron core between 39 to 54 mm2, the ratio of the cross-sectional area SM of the magnets with the cross-sectional area SC of the iron core in the 0.7 to 1.4 range, the ratio of the axial direction length LC of the iron core with the winding width L of the primary and secondary coils in the 0.9 to 1.2 range, and the winding width L in the 50 to 90 mm range, the primary energy produced in the primary coil can be increased without increasing the external diameter A of the case.
    Type: Application
    Filed: November 30, 2001
    Publication date: May 16, 2002
    Inventors: Kazutoyo Oosuka, Masami Kojima, Keisuke Kawano
  • Patent number: 6353378
    Abstract: An ignition coil for an internal combustion engine is mainly made up of a transformer part and a control circuit part and a connecting part, and the transformer part is made up of a iron core which forms an open magnetic path, magnets, a secondary spool, a secondary coil, a primary spool and a primary coil. By respectively setting the cross-sectional area SC of the iron core between 39 to 54 mm2, the ratio of the cross-sectional area SM of the magnets with the cross-sectional area SC of the iron core in the 0.7 to 1.4 range, the ratio of the axial direction length Lc of the iron core with the winding width L of the primary and secondary coils in the 0.9 to 1.2 range, and the winding width L in the 50 to 90 mm range, the primary energy produced in the primary coil can be increased without increasing the external diameter A of the case.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: March 5, 2002
    Assignee: Nippondenson
    Inventors: Kazutoyo Oosuka, Masami Kojima, Keisuke Kawano
  • Patent number: 6252483
    Abstract: An electromagnetic coil which may be employed as an ignition coil for an internal combustion engine is disclosed. The electromagnetic coil includes a lower voltage winding portion and a higher voltage winding portion. The lower voltage winding portion is wound around a spool and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a leading portion of wire. The higher voltage winding portion is wound around the spool adjacent the lower voltage winding portion and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a trailing portion of the wire.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: June 26, 2001
    Assignee: Nippondenso Co., Ltd.
    Inventors: Keisuke Kawano, Kazutoyo Oosuka, Masami Kojima, Akimitsu Sugiura, Yoshitaka Satou, Katsumi Nakazawa
  • Patent number: 6208231
    Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: March 27, 2001
    Assignee: Denso Corporation
    Inventors: Kazutoyo Oosuka, Keisuke Kawano, Hiroyuki Wakabayashi, Akimitsu Sugiura, Tomonori Ishikawa, Naruhiko Inayosi, Masahiko Aoyama, Kazuhide Kawai, Norihiro Adachi, Yoshimi Nakase, Yoshitaka Sato, Tomonari Chiba, Katsuhisa Kato
  • Patent number: 6060973
    Abstract: An electromagnetic coil which may be employed as an ignition coil for an internal combustion engine is disclosed. The electromagnetic coil includes a lower voltage winding portion and a higher voltage winding portion. The lower voltage winding portion is wound around a spool and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a leading portion of wire. The higher voltage winding portion is wound around the spool adjacent the lower voltage winding portion and includes a plurality of winding layers overlapped with each other and inclined at a given angle to the length of the spool. Each of the winding layers includes a collection of turns made up of a trailing portion of the wire.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: May 9, 2000
    Assignee: Nippondenso Co., Ltd.
    Inventors: Keisuke Kawano, Kazutoyo Oosuka, Masami Kojima, Akimitsu Sugiura, Yoshitaka Satou, Katsumi Nakazawa
  • Patent number: 5963118
    Abstract: A traverse shaft section 609 shifts in response to the rotation of a bobbin rotating section 604 with a predetermined winding pitch P1 equivalent to two to 10 times the diameter of a wire rod 520. With this shift movement of traverse shift section 609, wire rod 520 extracted from a winding nozzle section 610 shifting together with traverse shaft section 609 is wound spirally along a slant surface 530 formed by a first winding section 541 at the winding pitch P1 equivalent to two to 10 times the diameter of a wire rod 520. As a result, an advancing-side wire rod 520a and a reversing-side wire rod 520b cross over each other at opposing inclinations. Hence, it becomes possible to prevent the reversing-side wire rod 520b, when wound on the advancing-side wire rod 520a, from pulling and dislocating the advancing-side wire rod 520a from its regular winding position, thereby eliminating undesirable winding collapse.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: October 5, 1999
    Assignee: Nippondenso Co., Ltd.
    Inventors: Keisuke Kawano, Kazutoyo Oosuka, Noriyasu Inomata
  • Patent number: 5906040
    Abstract: A piling machine includes a table with a plurality of step-shelves, a slider and a stopper. One of a plurality of iron strips is placed in a prescribed order on each of the step-shelves, caught by the slider one by one, and piled together as the slider proceeds. When the slider is stopped by the stopper, all the strips are piled up to form a strip assembly. The stopper has a curved front surface to neatly hold the strip assembly, thereby easily forming the strip assembly into a desired shape.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: May 25, 1999
    Assignee: Denso Corporation
    Inventors: Keisuke Kawano, Kazutoyo Oosuka, Masami Kojima
  • Patent number: 5736917
    Abstract: A traverse shaft section 609 shifts in response to the rotation of a bobbin rotating section 604 with a predetermined winding pitch P1 equivalent to two to 10 times the diameter of a wire rod 520. With this shift movement of traverse shift section 609, wire rod 520 extracted from a winding nozzle section 610 shifting together with traverse shaft section 609 is wound spirally along a slant surface 530 formed by a first winding section 541 at the winding pitch P1 equivalent to two to 10 times the diameter of a wire rod 520. As a result, an advancing-side wire rod 520a and a reversing-side wire rod 520b cross over each other at opposing inclinations. Hence, it becomes possible to prevent the reversing-side wire rod 520b, when wound on the advancing-side wire rod 520a, from pulling and dislocating the advancing-side wire rod 520a from its regular winding position, thereby eliminating undesirable winding collapse.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: April 7, 1998
    Assignee: Nippondenso Co., LTD.
    Inventors: Keisuke Kawano, Kazutoyo Oosuka, Noriyasu Inomata
  • Patent number: D877944
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: March 10, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Atsushi Yoshida, Keisuke Watanabe, Tamami Sato, Yasunori Kawano