Patents by Inventor Ikuo Hirayama

Ikuo Hirayama 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: 10622173
    Abstract: A rocker switch device is provided in which a pair of shaft portions are projectingly provided on mutually opposing faces of extremity portions of a pair of side wall parts of a switch case, the pair of shaft portions being aligned on the same axis as each other, a bearing hole is formed in an operating knob so as to extend therethrough, the pair of shaft portions being rotatably fitted into the bearing hole, a projecting portion is provided on an outside face of the pair of side wall parts, the projecting portion being pressed into contact with the support body to thus prevent rattling of the switch case, and a support pin is fitted into the bearing hole, opposite ends of the support pin abutting against extremities of the pair of shaft portions respectively. Such arrangement prevents switch malfunctioning, and restrains deformation of the side wall parts.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: April 14, 2020
    Assignees: Toyo Denso Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Ikuo Hirayama, Kohei Tosa, Kazuhiko Ono, Katsuhisa Yamada, Norifumi Shimizu
  • Publication number: 20190267203
    Abstract: A rocker switch device is provided in which a pair of shaft portions are projectingly provided on mutually opposing faces of extremity portions of a pair of side wall parts of a switch case, the pair of shaft portions being aligned on the same axis as each other, a bearing hole is formed in an operating knob so as to extend therethrough, the pair of shaft portions being rotatably fitted into the bearing hole, a projecting portion is provided on an outside face of the pair of side wall parts, the projecting portion being pressed into contact with the support body to thus prevent rattling of the switch case, and a support pin is fitted into the bearing hole, opposite ends of the support pin abutting against extremities of the pair of shaft portions respectively. Such arrangement prevents switch malfunctioning, and restrains deformation of the side wall parts.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 29, 2019
    Inventors: Ikuo HIRAYAMA, Kohei TOSA (deceased), Kazuhiko ONO, Katsuhisa YAMADA, Norifumi SHIMIZU
  • Patent number: 7928821
    Abstract: A high-strength ignition coil that can reduce stress produced in a coil case and prevent a casting material from being cracked when the ignition coil is mounted on an engine block. A coil case has a mounting flange on an outer surface thereof. A coil assembly is housed in the coil case. A casting material is filled into a gap between the coil case and the coil assembly and gaps which the coil assembly has. A plurality of first guide ribs are provided on an inner wall surface of the coil case or an outer surface of the coil assembly, for positioning the outer surface of the coil assembly with respect to the inner wall surface of the coil case. A limited area in which there is no first guide rib is provided on the inner wall surface of the coil case which faces the mounting flange, or the outer surface of the coil assembly which faces the mounting flange via the inner wall surface of the coil case.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: April 19, 2011
    Assignees: Toyo Denso Kabushiki Kaisha, Denso Corporation
    Inventors: Shuichi Matsubayashi, Ikuo Hirayama, Masami Kojima, Takashi Tauchi, Takeshi Morimoto, Atsushi Iwami
  • Patent number: 7849843
    Abstract: An ignition coil is equipped with a sparkplug of an engine. The ignition coil includes a coil portion, a tower portion, and a plug cap. The coil portion includes a coil case accommodating a primary and secondary coils being coaxial with each other. The coil portion has an end connected with the plug cap via the tower portion. The plug cap is press-fitted with the sparkplug. The coil case has an outer periphery from which a flange portion projects radially outward in a flange-projecting direction. The tower cylinder portion has a tower axis substantially in parallel with a coil axis of the primary and secondary coils. The tower axis is offset from the coil axis in a tower-offset direction. The tower-offset direction is substantially the same as the flange-projecting direction.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: December 14, 2010
    Assignees: Denso Corporation, Toyo Denso Kabushiki Kaisha
    Inventors: Masami Kojima, Takashi Tauchi, Takeshi Morimoto, Atsushi Iwami, Yoshitaka Satoh, Shuichi Matsubayashi, Ikuo Hirayama
  • Patent number: 7796004
    Abstract: An ignition coil of a dual ignition type that can prevent outputs from becoming unbalanced due to a difference in floating capacitance on wiring that connects secondary output terminals and ignition plugs together, thus realizing balanced outputs. A coil assembly housed in a housing as a coil case has a primary coil and secondary coils disposed concentrically with the primary coil. The secondary coils are comprised of two coils wound in opposite directions with the center of winding width being a boundary. The center of the winding width of the primary coil is shifted from the center of the winding width of the secondary coils by a predetermined width so as to balance outputs from the two secondary coils. A casting material is filled into a gap between the housing and the coil assembly and gaps which the coil assembly has.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: September 14, 2010
    Assignees: Toyo Denso Kabushiki Kaisha, Denso Corporation
    Inventors: Shuichi Matsubayashi, Ikuo Hirayama, Masami Kojima, Takashi Tauchi
  • Patent number: 7777604
    Abstract: A high-strength ignition coil that can prevent distortion arising from pin marks formed on a surface of a core and makes it less likely for insulating resin to be cracked. The coil assembly is housed in a coil case. A casting material is filled into a gap between the coil case and the coil assembly and gaps which the coil assembly has. The coil assembly is comprised of a coil pair including a cylindrical primary coil and a secondary coil disposed concentrically with the primary coil, and a core. The core is fitted into a central space of the coil pair and forms a magnetic path. The core is coated with mold resin. Concave portions of pin marks formed on a mold resin coating by removal of core fixing pins when the mold resin coating is formed are filled with mold resin.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: August 17, 2010
    Assignees: Toyo Denso Kabushiki Kaisha, Denso Corporation
    Inventors: Shuichi Matsubayashi, Ikuo Hirayama, Atsushi Iwami, Takeshi Morimoto
  • Publication number: 20090194084
    Abstract: An ignition coil is equipped with a sparkplug of an engine. The ignition coil includes a coil portion, a tower portion, and a plug cap. The coil portion includes a coil case accommodating a primary and secondary coils being coaxial with each other. The coil portion has an end connected with the plug cap via the tower portion. The plug cap is press-fitted with the sparkplug. The coil case has an outer periphery from which a flange portion projects radially outward in a flange-projecting direction. The tower cylinder portion has a tower axis substantially in parallel with a coil axis of the primary and secondary coils. The tower axis is offset from the coil axis in a tower-offset direction. The tower-offset direction is substantially the same as the flange-projecting direction.
    Type: Application
    Filed: April 1, 2008
    Publication date: August 6, 2009
    Applicants: DENSO CORPORATION, TOYO DENSO KABUSHIKI KAISHA
    Inventors: Masami Kojima, Takashi Tauchi, Takeshi Morimoto, Atsushi Iwami, Yoshitaka Satoh, Shuichi Matsubayashi, Ikuo Hirayama
  • Patent number: 7460919
    Abstract: A contents reproduction control portion uses feature quantity data about feature quantities of pieces of music and an interference degree table which defines degrees of interference among the feature quantities. In this manner, interference music to be output from between front-seat speakers and music to be output from rear-seat speakers is at least partially avoided.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: December 2, 2008
    Assignee: Panasonic Corporation
    Inventor: Ikuo Hirayama
  • Publication number: 20080264397
    Abstract: A high-strength ignition coil that can reduce stress produced in a coil case and prevent a casting material from being cracked when the ignition coil is mounted on an engine block. A coil case has a mounting flange on an outer surface thereof. A coil assembly is housed in the coil case. A casting material is filled into a gap between the coil case and the coil assembly and gaps which the coil assembly has. A plurality of first guide ribs are provided on an inner wall surface of the coil case or an outer surface of the coil assembly, for positioning the outer surface of the coil assembly with respect to the inner wall surface of the coil case. A limited area in which there is no first guide rib is provided on the inner wall surface of the coil case which faces the mounting flange, or the outer surface of the coil assembly which faces the mounting flange via the inner wall surface of the coil case.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 30, 2008
    Applicants: Toyo Denso Kabushiki Kaisha, Denso Corporation
    Inventors: Shuichi Matsubayashi, Ikuo Hirayama, Masami Kojima, Takashi Tauchi, Takeshi Morimoto, Atsushi Iwami
  • Publication number: 20080266040
    Abstract: A high-strength ignition coil that can prevent distortion arising from pin marks formed on a surface of a core and makes it less likely for insulating resin to be cracked. The coil assembly is housed in a coil case. A casting material is filled into a gap between the coil case and the coil assembly and gaps which the coil assembly has. The coil assembly is comprised of a coil pair including a cylindrical primary coil and a secondary coil disposed concentrically with the primary coil, and a core. The core is fitted into a central space of the coil pair and forms a magnetic path. The core is coated with mold resin. Concave portions of pin marks formed on a mold resin coating by removal of core fixing pins when the mold resin coating is formed are filled with mold resin.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 30, 2008
    Applicants: Toyo Denso Kabushiki Kaisha, Denso Corporation
    Inventors: Shuichi Matsubayashi, Ikuo Hirayama, Atsushi Iwami, Takeshi Morimoto
  • Publication number: 20080264396
    Abstract: An ignition coil of a dual ignition type that can prevent outputs from becoming unbalanced due to a difference in floating capacitance on wiring that connects secondary output terminals and ignition plugs together, thus realizing balanced outputs. A coil assembly housed in a housing as a coil case has a primary coil and secondary coils disposed concentrically with the primary coil. The secondary coils are comprised of two coils wound in opposite directions with the center of winding width being a boundary. The center of the winding width of the primary coil is shifted from the center of the winding width of the secondary coils by a predetermined width so as to balance outputs from the two secondary coils. A casting material is filled into a gap between the housing and the coil assembly and gaps which the coil assembly has.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 30, 2008
    Applicants: Toyo Denso Kabushiki Kaisha, Denso Corporation
    Inventors: Shuichi Matsubayashi, Ikuo Hirayama, Masami Kojima, Takashi Tauchi
  • Publication number: 20070274546
    Abstract: A contents reproduction control portion uses feature quantity data about feature quantities of pieces of music and an interference degree table which defines degrees of interference among the feature quantities. In this manner, interference music to be output from between front-seat speakers and music to be output from rear-seat speakers is at least partially avoided.
    Type: Application
    Filed: September 12, 2005
    Publication date: November 29, 2007
    Inventor: Ikuo Hirayama