Patents by Inventor Toshihiko Kawamura

Toshihiko Kawamura 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: 20220305896
    Abstract: The lower structure of an electric vehicle includes: an automatic transmission provided below a floor panel and in an intermediate portion in a right-left direction thereof; an inverter arranged between the automatic transmission and a floor side frame; and an attachment bracket for attaching the inverter to the floor panel. The attachment bracket has an outer shell structure including: an inner wall portion dividing the inverter and the automatic transmission; an outer wall portion dividing the inverter and the floor side frame; an upper wall portion; and a lower wall portion.
    Type: Application
    Filed: February 7, 2022
    Publication date: September 29, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Hiroaki KASHIHARA, Yoshinori IKEDA, Daisuke TSUJI, Kohichi TANIMOTO, Toshihiko KAWAMURA, Noriharu YAMASAKI
  • Patent number: 11446998
    Abstract: A front-side cross member and a rear-side cross member in a front portion of a rear floor are spaced apart from each other, on a top side of the rear floor, ends of the front-side cross member in the vehicle width direction are connected to respective lower ends of left and right brace members extending up and down, while the rear-side cross member is disposed on the rear floor from an underside of the rear floor. A high voltage component is disposed on a top face in the front portion of the rear floor between the front and rear-side cross members, the high voltage component is disposed rearwardly spaced apart from the front-side cross member and closer to the rear-side cross member, and the high voltage component is attached to the front-side cross member via a bracket that deforms under a load in the vehicle front-rear direction.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: September 20, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yuto Kodama, Koji Yoshimura, Taichi Hirakawa, Toshihiko Kawamura, Harumitsu Kubota, Takeshi Sasabe
  • Patent number: 11308930
    Abstract: An electronic horn for use, e.g., in a vehicle, includes a piezoelectric element (52) that excites a plate-shaped oscillator (51). A resonator (7) is provided with an opening (71) and covers forward of the oscillator such that a resonance space (S) is defined between the resonator and the oscillator. An inner cylinder (62) and an outer conical housing (63) are provided concentrically around the resonator. A circular cover (8) covers the inner cylinder (62) and the outer conical housing (63) from the front, such that a buffer chamber (BR), at least one first sound amplifying chamber (MH1), and a second sound amplifying chamber (MH2) are defined around an entire circumference of the opening of the resonator.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 19, 2022
    Assignee: IMASEN ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Katsunori Uchimura, Koichi Toyama, Junjiro Yoshimura, Toshihiko Kawamura, Yoshio Miyata
  • Patent number: 11145286
    Abstract: An electronic horn includes a cover (8) on a front side of an intermediate element (6). A first passage (P1) within the horn is defined by a central portion (82) of the cover (8) that projects into a cylindrical interior of a cylindrical water-proofing wall (621). Second passages (P2, P3, P4) extend generally concentrically with respect to the first passage (P1) and are respectively defined by water-proofing walls (83, 84) that are formed on the cover (8) and project into the interior spaces of water-proofing walls (622, 633). The outermost second passage (P4) opens toward the forward direction. The first and second passages (P1-P4) extend in a back-and-forth path that prevents any rainwater, which has entered the interior of the horn through the opening of the outermost second passage (P4), from reaching a resonance space (7) defined between the resonator (7) and a sound-generating oscillator (51).
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: October 12, 2021
    Assignee: IMASEN ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Katsunori Uchimura, Koichi Toyama, Yoshio Miyata, Tetsuo Momo, Toshihiko Kawamura, Junjiro Yoshimura
  • Publication number: 20210061081
    Abstract: A front-side cross member and a rear-side cross member in a front portion of a rear floor are spaced apart from each other, on a top side of the rear floor, ends of the front-side cross member in the vehicle width direction are connected to respective lower ends of left and right brace members extending up and down, while the rear-side cross member is disposed on the rear floor from an underside of the rear floor. A high voltage component is disposed on a top face in the front portion of the rear floor between the front and rear-side cross members, the high voltage component is disposed rearwardly spaced apart from the front-side cross member and closer to the rear-side cross member, and the high voltage component is attached to the front-side cross member via a bracket that deforms under a load in the vehicle front-rear direction.
    Type: Application
    Filed: August 17, 2020
    Publication date: March 4, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yuto KODAMA, Koji YOSHIMURA, Taichi HIRAKAWA, Toshihiko KAWAMURA, Harumitsu KUBOTA, Takeshi SASABE
  • Publication number: 20200320970
    Abstract: An electronic horn for use, e.g., in a vehicle, includes a piezoelectric element (52) that excites a plate-shaped oscillator (51). A resonator (7) is provided with an opening (71) and covers forward of the oscillator such that a resonance space (S) is defined between the resonator and the oscillator. An inner cylinder (62) and an outer conical housing (63) are provided concentrically around the resonator. A circular cover (8) covers the inner cylinder (62) and the outer conical housing (63) from the front, such that a buffer chamber (BR), at least one first sound amplifying chamber (MH1), and a second sound amplifying chamber (MH2) are defined around an entire circumference of the opening of the resonator.
    Type: Application
    Filed: November 9, 2017
    Publication date: October 8, 2020
    Inventors: Katsunori UCHIMURA, Koichi TOYAMA, Junjiro YOSHIMURA, Toshihiko KAWAMURA, Yoshio MIYATA
  • Publication number: 20200066243
    Abstract: An electronic horn includes a cover (8) on a front side of an intermediate element (6). A first passage (P1) within the horn is defined by a central portion (82) of the cover (8) that projects into a cylindrical interior of a cylindrical water-proofing wall (621). Second passages (P2, P3, P4) extend generally concentrically with respect to the first passage (P1) and are respectively defined by water-proofing walls (83, 84) that are formed on the cover (8) and project into the interior spaces of water-proofing walls (622, 633). The outermost second passage (P4) opens toward the forward direction. The first and second passages (P1-P4) extend in a back-and-forth path that prevents any rainwater, which has entered the interior of the horn through the opening of the outermost second passage (P4), from reaching a resonance space (7) defined between the resonator (7) and a sound-generating oscillator (51).
    Type: Application
    Filed: February 23, 2018
    Publication date: February 27, 2020
    Inventors: Katsunori UCHIMURA, Koichi TOYAMA, Yoshio MIYATA, Tetsuo MOMO, Toshihiko KAWAMURA
  • Patent number: 9950663
    Abstract: An electronic vehicle horn outputs a warning sound by exciting a diaphragm using a piezoelectric device that is driven with a composite signal generated, in part, by modulating a first fundamental square wave with a first modulating square wave and setting a frequency deviation at the time of the modulation in a predetermined range, modulating a second fundamental square wave with a second modulating square wave and setting a frequency deviation at the time of the modulation in a predetermined range, and generating the composite signal by mixing the modulated first fundamental square wave and the modulated second fundamental square wave.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: April 24, 2018
    Assignee: IMASEN ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Koichi Toyama, Toshihiko Kawamura, Takashi Yamada
  • Publication number: 20170028910
    Abstract: An electronic vehicle horn outputs a warning sound by exciting a diaphragm using a piezoelectric device that is driven with a composite signal generated, in part, by modulating a first fundamental square wave with a first modulating square wave and setting a frequency deviation at the time of the modulation in a predetermined range, modulating a second fundamental square wave with a second modulating square wave and setting a frequency deviation at the time of the modulation in a predetermined range, and generating the composite signal by mixing the modulated first fundamental square wave and the modulated second fundamental square wave.
    Type: Application
    Filed: July 27, 2016
    Publication date: February 2, 2017
    Inventors: Koichi TOYAMA, Toshihiko KAWAMURA, Takashi YAMADA
  • Patent number: 8724293
    Abstract: Disclosed is a storage device comprising a positive electrode material containing graphite; a negative electrode material containing an oxide of at least one metal element selected from Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, Sn, Sb, Bi, W and Ta, which may preferably contains a metal oxide containing at least Ti as a metal element; and an electrolyte solution. This storage device has high capacitance and high discharge voltage, thereby having high energy. Consequently, this storage device can have high energy density, while being excellent in cycle performances and rate performances.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: May 13, 2014
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Masaki Yoshio, Toshihiko Kawamura, Nariaki Moriyama, Masatoshi Honma, Tokuo Suita, Hirofumi Taniguchi, Tomoyuki Sotokawa
  • Publication number: 20100046143
    Abstract: Disclosed is a storage device comprising a positive electrode material containing graphite; a negative electrode material containing an oxide of at least one metal element selected from Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, Sn, Sb, Bi, W and Ta, which may preferably contains a metal oxide containing at least Ti as a metal element; and an electrolyte solution. This storage device has high capacitance and high discharge voltage, thereby having high energy. Consequently, this storage device can have high energy density, while being excellent in cycle performances and rate performances.
    Type: Application
    Filed: October 19, 2007
    Publication date: February 25, 2010
    Inventors: Masaki Yoshio, Toshihiko Kawamura, Nariaki Moriyama, Masatoshi Honma, Tokuo Suita, Hirofumi Taniguchi, Tomoyuki Sotokawa
  • Patent number: 7018466
    Abstract: A concrete admixture or a mortar admixture which is obtained by mixing a silicate with an acid in the presence of water and then solidifying the mixture. It is preferable that the silicate is sodium silicate and the acid is a carboxylic acid. This admixture can improve a tensile strength of a concrete or a mortar. Since a concrete or a mortar containing the admixture, cement, an aggregate and water is high in tensile strength, it can advantageously be used in various concrete structures, concrete products or mortar products.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: March 28, 2006
    Assignees: Tobishima Corporation, Aston Co., Ltd.
    Inventors: Motoyuki Suzuki, Kazuhiro Kasai, Masato Terazawa, Kazuyuki Nishiura, Hisashi Ando, Toshihiko Kawamura
  • Publication number: 20050155524
    Abstract: A concrete admixture or a mortar admixture which is obtained by mixing a silicate with an acid in the presence of water and then solidifying the mixture. It is preferable that the silicate is sodium silicate and the acid is a carboxylic acid. This admixture can improve a tensile strength of a concrete or a mortar. Since a concrete or a mortar containing the admixture, cement, an aggregate and water is high in tensile strength, it can advantageously be used in various concrete structures, concrete products or mortar products.
    Type: Application
    Filed: January 10, 2005
    Publication date: July 21, 2005
    Inventors: Motoyuki Suzuki, Kazuhiro Kasai, Masato Terazawa, Kazuyuki Nishiura, Hisashi Ando, Toshihiko Kawamura
  • Patent number: 6871670
    Abstract: In a metal bellows accumulator, a metallic bellows unit is disposed within a pressure space defined in a main shell, and one end of the metallic bellows unit is fixedly secured to one end wall of the main shell. The metallic bellows unit sections the pressure space into an outer chamber serving as a gas chamber in which a pressurized gas is enclosed, and an inner chamber serving as a liquid chamber communicating with a liquid port formed in the end wall of the main shell. A stopper (auxiliary shell) for limiting collapsing movement of the metallic bellows unit is disposed within the liquid chamber and has a communication passage hole. The liquid port always communicates with a liquid chamber to which an inner circumferential surface of a bellows portion of the metallic bellows unit is exposed via the communication passage hole.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: March 29, 2005
    Assignee: Advics Co., Ltd.
    Inventors: Kenichi Suzuki, Yasuo Takahara, Hiroshi Kondo, Toshihiko Kawamura
  • Publication number: 20040244857
    Abstract: In a metal bellows accumulator, a metallic bellows unit is disposed within a pressure space defined in a main shell, and one end of the metallic bellows unit is fixedly secured to one end wall of the main shell. The metallic bellows unit sections the pressure space into an outer chamber serving as a gas chamber in which a pressurized gas is enclosed, and an inner chamber serving as a liquid chamber communicating with a liquid port formed in the end wall of the main shell. A stopper (auxiliary shell) for limiting collapsing movement of the metallic bellows unit is disposed within the liquid chamber and has a communication passage hole. The liquid port always communicates with a liquid chamber to which an inner circumferential surface of a bellows portion of the metallic bellows unit is exposed via the communication passage hole.
    Type: Application
    Filed: April 12, 2004
    Publication date: December 9, 2004
    Inventors: Kenichi Suzuki, Yasuo Takahara, Hiroshi Kondo, Toshihiko Kawamura
  • Patent number: 6715847
    Abstract: In the rotary pump, a high pressure outer circumference chamber, which is formed around an outer circumference of an outer rotor and communicates with a discharge port, presses radially inward first defined parts among the outer circumference of the outer rotor that are positioned radially outside second defined parts adjacent to teeth gap portions whose volume are largest and smallest among teeth gap portions communicating with an intake port. Teeth top clearance between the outer and inner rotors at the second defined part is reduced due to pressure difference between the discharge pressure applied to the first defined parts and the intake pressure applied to the second defined parts.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: April 6, 2004
    Assignee: Denso Corporation
    Inventors: Takahiro Yamaguchi, Tomoo Harada, Takashi Sato, Hiroshi Kondo, Toshihiko Kawamura
  • Publication number: 20030183129
    Abstract: A concrete admixture or a mortar admixture which is obtained by mixing a silicate with an acid in the presence of water and then solidifying the mixture. It is preferable that the silicate is sodium silicate and the acid is a carboxylic acid. This admixture can improve a tensile strength of a concrete or a mortar. Since a concrete or a mortar containing the admixture, cement, an aggregate and water is high in tensile strength, it can advantageously be used in various concrete structures, concrete products or mortar products.
    Type: Application
    Filed: March 14, 2003
    Publication date: October 2, 2003
    Applicants: MOTOYUKI SUZUKI, TOBISHIMA CORPORATION, ASTON CO., LTD.
    Inventors: Motoyuki Suzuki, Kazuhiro Kasai, Masato Terazawa, Kazuyuki Nishiura, Hisashi Ando, Toshihiko Kawamura
  • Publication number: 20020095934
    Abstract: In the rotary pump, a high pressure outer circumference chamber, which is formed around an outer circumference of an outer rotor and communicates with a discharge port, presses radially inward first defined parts among the outer circumference of the outer rotor that are positioned radially outside second defined parts adjacent to teeth gap portions whose volume are largest and smallest among teeth gap portions communicating with an intake port. Teeth top clearance between the outer and inner rotors at the second defined part is reduced due to pressure difference between the discharge pressure applied to the first defined parts and the intake pressure applied to the second defined parts.
    Type: Application
    Filed: January 24, 2002
    Publication date: July 25, 2002
    Inventors: Takahiro Yamaguchi, Tomoo Harada, Takashi Sato, Hiroshi Kondo, Toshihiko Kawamura
  • Patent number: 6056014
    Abstract: The invention relates to a drainage collective pipe joint where wastewater flowing in a collective housing of multiple floors is subjected to swirl flow and is allowed to flow down. The drainage collective pipe joint comprises an upper vertical pipe connection port to connect an upper vertical pipe, a main body part having a taper pipe part formed in downward taper shape at lower side and installed at lower side of the upper vertical pipe connection port, a lower vertical pipe connection port installed at lower side of the main body part and capable of connecting a lower vertical pipe, at least one horizontal branch pipe connection port installed at the main body part and connected a horizontal branch pipe, and a plurality of drainage flow control guides projected from an inner circumferential wall at lower side of the horizontal branch pipe connection port of the main body part and capable of controlling the drainage flow.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: May 2, 2000
    Assignee: Noriatsu Kojima
    Inventors: Noriatsu Kojima, Yozo Kako, Toshihiko Kawamura
  • Patent number: 5451245
    Abstract: Acicular magnetic iron particles comprising acicular iron substrate particles having first layer consisting of at least one of hydrous oxides and anhydrous oxides of aluminum and zirconium and mixtures thereof and second layer consisting of hydrous oxides and anhydrous oxides of aluminum and mixtures thereof coated on the surfaces of the particles are produced by coating the surfaces of hydrated iron oxide particles as substrate with at least one of aluminum compounds and zirconium compounds, then heating the coated substrate particles to convert to hematite particles, thereafter coating the surfaces of the resultant hematite substrate particles with at least one of aluminum compounds, and then reducing under heat the coated hematite particles.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: September 19, 1995
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Eiji Nomura, Toshihiko Kawamura, Kenji Hatanaka, Nariaki Moriyama