Patents by Inventor Takashi Kuwahara

Takashi Kuwahara 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: 10787041
    Abstract: Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and a protective layer located on a tire outer side of the print layer. The decorative portion further includes an intermediate layer located between the print layer and the protective layer. When a storage modulus of the print layer, a storage modulus of the protective layer, and a storage modulus of the intermediate layer are respectively defined as E1?, E2?, and E3?, the following relational expression is satisfied: E2?>E3?>E1?.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: September 29, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kentaro Mizotani, Nobuyuki Hirai, Takashi Kuwahara, Yuki Nakamura, Keita Oshikane, Toshio Furutaka, Yasuma Saito, Yukio Sugita
  • Publication number: 20200290114
    Abstract: A method for setting conditions for a shaft diameter enlargement, a shaft diameter enlargement method, and a shaft diameter enlargement apparatus are provided. A controller of the shaft diameter enlargement apparatus controls a compressing section, a bending section, and a rotating section to enlarge an intermediate portion of a shaft workpiece to have a predetermined outer diameter by rotating the shaft workpiece about its axis with axial compressive force a bending angle being applied to the intermediate portion. The controller determines whether the shaft workpiece is acceptable, based on the number of rotations of die shaft workpiece required for enlarging the intermediate portion to have the predetermined outer diameter or based on an enlargement ratio of the intermediate portion.
    Type: Application
    Filed: October 31, 2018
    Publication date: September 17, 2020
    Applicant: NETUREN CO., LTD.
    Inventors: Mitsuhiro OKAMOTO, Fumiaki IKUTA, Yoshitaka KUWAHARA, Kazuki MORI, Takashi IKEDA
  • Publication number: 20200284357
    Abstract: An eccentric rotary valve includes valve elements arranged symmetric around the valve shaft axis, and valve element valve seats and valve body valve seats which are elliptic conical surfaces made of metal. Each valve element has an elliptic spherical surface, an elliptic conical surface, or a completely spherical surface to which one of the valve element valve seats is continuously and steplessly connected. The axes of the valve seats are offset from the valve shaft axis in the valve closing direction such that, when the valve shaft is rotated in the valve opening direction, the valve element valve seats instantly separate from the valve body valve seats. Flow regulating plates are disposed in the valve body between the valve elements to ensure smooth flow of fluid. Ribs are disposed on opposite sides of the valve shaft and forwardly, in the valve opening direction, of the respective valve elements.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 10, 2020
    Inventors: Takashi KUWAHARA, Hidemitsu MAMOTO
  • Publication number: 20200244307
    Abstract: The transmission unit (10) includes a digital signal source (11) and a pulse generation circuit (14). The digital signal source (11) generates a rectangular wave signal. The pulse generation circuit (14) includes a short stub (141) and an open stub (142), and generates a pulse signal corresponding to the rectangular wave signal. The receiving unit (30) receives the pulse signal from the transmission unit (10) via a lossy transmission path (20). A comparison circuit (32) having a hysteresis function converts the received pulse signal into a rectangular wave signal.
    Type: Application
    Filed: December 6, 2017
    Publication date: July 30, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takashi KUWAHARA, Tetsu OWADA, Hiroshi ITAKURA
  • Publication number: 20200198000
    Abstract: To radially enlarge an intermediate portion of a shaft, the shaft is held by a pair of holders with a gap between the pair of holders in an axial direction of the shaft, compression force is applied in the axial direction to the intermediate portion arranged between the pair of holders, and alternating load is applied in a direction intersecting the axial direction to the intermediate portion to enlarge the intermediate portion. When enlarging the intermediate portion, a temperature of the intermediate portion is set to be above a blue brittleness temperature range of the shaft, and a temperature of the holders is set to be below a tempering temperature range of the holders.
    Type: Application
    Filed: September 7, 2018
    Publication date: June 25, 2020
    Applicant: NETUREN CO., LTD.
    Inventors: Yoshitaka KUWAHARA, Mitsuhiro OKAMOTO, Takashi IKEDA, Kazuki MORI
  • Patent number: 10693505
    Abstract: A sending unit includes a send data storing unit, a sending-side signal processing unit, and a first DA converter and a second DA converter. A receiving unit includes a first AD converter and a second AD converter, a receiving-side signal processing unit, and a receive data storing unit. The sending-side signal processing unit calculates output signals using a matrix formed of eigenvectors corresponding to transmission eigenmodes in which the signals propagate through a transmission path. The receiving-side signal processing unit calculates data signals of a plurality of sequences by the inverse of the matrix used by the sending-side signal processing unit.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: June 23, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi Kuwahara, Yoshihiro Akeboshi
  • Patent number: 10654092
    Abstract: A method and an apparatus for manufacturing a stepped member are provided. An intermediate portion of a shaft workpiece is radially enlarged while being compressed in an axial direction by applying alternating load to the intermediate portion in a direction intersecting the axial direction in a state in which pressure that compresses the shaft workpiece in the axial direction is applied to both ends of the shaft workpiece. The enlarged intermediate portion of the shaft workpiece is cat in a direction perpendicular to the axial direction so that the shaft workpiece is divided into two stepped members. Each of the stepped members has a shaft portion and a head portion provided at an axial end of the shaft portion, and the head portion has a larger diameter than the shaft portion.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: May 19, 2020
    Assignee: NETUREN CO., LTD.
    Inventors: Yoshitaka Kuwahara, Kazuki Mori, Takashi Ikeda, Fumiaki Ikuta
  • Patent number: 10603963
    Abstract: Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and inner and outer layers respectively disposed on tire inner and outer sides of the print layer. When storage moduli at 25° C. of the print, inner, and outer layers are respectively defined as E125?, E225?, and E325?, E125?<E225? and E125?<E325? are satisfied. When storage moduli at 80° C. of the print, inner, and outer layers are respectively defined as E180?, E280?, and E380?, and storage modulus variations ?1, ?2, and ?3 at high temperature of the print, inner, and outer layers are respectively defined as ?1=|E125??E180?|/E125?, ?2=|E225??E280?|/E225?, and ?3=|E325??E380?|/E325?, ?1<?2 and ?1<?3, and E225?>E280? and E325?>E380? are satisfied.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: March 31, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kentaro Mizotani, Nobuyuki Hirai, Takashi Kuwahara, Yuki Nakamura, Keita Oshikane, Toshio Furutaka, Yasuma Saito, Yukio Sugita
  • Publication number: 20200052725
    Abstract: A sending unit includes a send data storing unit, a sending-side signal processing unit, and a first DA converter and a second DA converter. A receiving unit includes a first AD converter and a second AD converter, a receiving-side signal processing unit, and a receive data storing unit. The sending-side signal processing unit calculates output signals using a matrix formed of eigenvectors corresponding to transmission eigenmodes in which the signals propagate through a transmission path. The receiving-side signal processing unit calculates data signals of a plurality of sequences by the inverse of the matrix used by the sending-side signal processing unit.
    Type: Application
    Filed: March 21, 2017
    Publication date: February 13, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi KUWAHARA, Yoshihiro AKEBOSHI
  • Patent number: 10527572
    Abstract: A gas sensor, disposed projecting from a wiring member serving as a mounting target and including a first wire and a second wire, the gas sensor detecting a gas that produces water in a case that the gas is combusted by being supplied with a voltage from the first wire and the second wire and measuring a resistance value using the first wire and the second wire, the gas sensor including a resistor holding a catalyst that facilitates combustion of the gas, a first electrode terminal connected between one end of the resistor and the first wire, and a second electrode terminal connected between another end of the resistor and the second wire, and the first electrode terminal and the second electrode terminal are fixed to each other and form a water vapor diffusion cavity.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: January 7, 2020
    Assignee: Nissha Co., Ltd.
    Inventors: Takashi Matsumoto, Mitsuharu Kira, Hiroki Yamamoto, Yuri Kuwahara
  • Publication number: 20190280030
    Abstract: A solid-state imaging device includes: an imager including pixels arranged in rows and columns; vertical transfer portions in one-to-one correspondence with columns of the pixels, each of which includes a readout electrode that reads out signal charges generated in the pixels and a transfer electrode that transfers the read-out signal charges in the column direction; and a horizontal transfer portion which transfers, in the row direction, the signal charges transferred by the vertical transfer portions, and outputs the signal charges. The imager is formed by alternately disposing, in the column direction, a first row in which visible light pixels each including a first photoelectric converter that converts visible light into signal charges are arranged adjacent in the row direction and a second row in which infrared light pixels each including a second photoelectric converter that converts infrared light into signal charges are arranged adjacent in the row direction.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 12, 2019
    Inventors: Takashi KUWAHARA, Junichi MATSUO, Mitsugu YOSHITA
  • Publication number: 20190178829
    Abstract: Object: To provide a gas sensor having a small size and that can suppress gas detection problems caused by frost using only a small amount of power. Solution: A first electrode terminal (12) includes at least one first connection part (121) connected to a first wire and a first arm part (123) extending from the first connection part (121) to one end (11a) of a resistor (11). A second electrode terminal (13) includes at least one second connection part (131) connected to a second wire and a second arm part (133) extending from the second connection part (131) to the other end (11b) of the resistor (11). The first electrode terminal (12) and the second electrode terminal (13) are fixed to each other and form a water vapor diffusion cavity (S2) extending from the resistor (11) to a wiring member or the vicinity of the wiring member, with at least part of the first arm part (123) and at least part of the second arm part (133) coated with insulation.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 13, 2019
    Applicant: Nissha Co., Ltd.
    Inventors: Takashi MATSUMOTO, Mitsuharu KIRA, Hiroki YAMAMOTO, Yuri KUWAHARA
  • Patent number: 10256691
    Abstract: A motor wiring structure of the present invention relates to motor wiring for supplying electric power to coils which are respectively wound around split cores provided in a stator. The motor wiring structure includes a power supply-side terminal disposed on a power supply side, multiple coil connection-side terminals configured to be connected respectively to winding wire terminals of the coils, and multiple conductor wires each independently connecting the power supply-side terminal and one of the multiple coil connection-side terminals to each other. Moreover, the motor wiring structure includes a positioning and heat-dissipating protrusion which is provided to the coil connection-side terminal, and which is configured to position the coil connection-side terminal with respect to the stator and dissipate heat during thermal crimping with the coil.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: April 9, 2019
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Takashi Kuwahara, Shigeru Ishii, Yasunori Ishibashi
  • Patent number: 9869353
    Abstract: A vehicle clutch hydraulic system for a vehicle is provided with a mechanical oil pump, an electric oil pump, a forward clutch and a control valve unit. In the vehicle clutch hydraulic system, a main pump oil passage fluidly connects the mechanical oil pump to the control valve unit. A sub-pump oil passage fluidly connects the electric oil pump to a forward clutch oil passage into which an oil passage outlet opens at an inside location closer to a clutch rotational axis than a clutch oil chamber of the forward clutch.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: January 16, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takashi Kuwahara, Shigeru Ishii
  • Publication number: 20170240002
    Abstract: Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and a protective layer located on a tire outer side of the print layer. The decorative portion further includes an intermediate layer located between the print layer and the protective layer. When a storage modulus of the print layer, a storage modulus of the protective layer, and a storage modulus of the intermediate layer are respectively defined as E1?, E2?, and E3?, the following relational expression is satisfied: E2?>E3?>E1?.
    Type: Application
    Filed: July 24, 2015
    Publication date: August 24, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kentaro MIZOTANI, Nobuyuki HIRAI, Takashi KUWAHARA, Yuki NAKAMURA, Keita OSHIKANE, Toshio FURUTAKA, Yasuma SAITO, Yukio SUGITA
  • Publication number: 20170225520
    Abstract: Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and inner and outer layers respectively disposed on tire inner and outer sides of the print layer. When storage moduli at 25° C. of the print, inner, and outer layers are respectively defined as E125?, E225?, and E325?, E125?<E225? and E125?<E325? are satisfied. When storage moduli at 80° C. of the print, inner, and outer layers are respectively defined as E180?, E280?, and E380?, and storage modulus variations ?1, ?2, and ?3 at high temperature of the print, inner, and outer layers are respectively defined as ?1=|E125??E180?|/E125?, ?2=|E225??E280?|/E225?, and ?3=|E325??E380?|/E325?, ?1<?2 and ?1<?3, and E225?>E280? and E325?>E380? are satisfied.
    Type: Application
    Filed: July 24, 2015
    Publication date: August 10, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kentaro MIZOTANI, Nobuyuki HIRAI, Takashi KUWAHARA, Yuki NAKAMURA, Keita OSHIKANE, Toshio FURUTAKA, Yasuma SAITO, Yukio SUGITA
  • Patent number: 9458909
    Abstract: A drive power transmission device is provided that either disengages a first friction engagement element or a second friction engagement element when the other is engaged. The drive power transmission device detects the temperature of lubricating oil flowing in each friction engagement element using a temperature sensor. The drive power transmission device selectively disengages either a forward clutch or a reverse brake disengages when the other is engaged. The forward clutch and the reverse brake overlap axially, and are layered radially in an inner/outer arrangement. The temperature sensor is positioned at the periphery of the forward clutch and the reverse brake. A lubricating oil pathway is formed such that lubricating oil for cooling the forward clutch and the reverse brake passes through the forward clutch and the reverse brake in the radial direction from the inside of the forward clutch and the reverse brake to the temperature sensor.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: October 4, 2016
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takuhiro Sugimoto, Shigeru Ishii, Kazuhiro Miyachi, Takashi Kuwahara
  • Publication number: 20160146270
    Abstract: A vehicle clutch hydraulic system for a vehicle is provided with a mechanical oil pump, an electric oil pump, a forward clutch and a control valve unit. In the vehicle clutch hydraulic system, a main pump oil passage fluidly connects the mechanical oil pump to the control valve unit. A sub-pump oil passage fluidly connects the electric oil pump to a forward clutch oil passage into which an oil passage outlet opens at an inside location closer to a clutch rotational axis than a clutch oil chamber of the forward clutch.
    Type: Application
    Filed: June 18, 2014
    Publication date: May 26, 2016
    Inventors: Takashi KUWAHARA, Shigeru ISHII
  • Publication number: 20160121661
    Abstract: A tire 10 has a decoration portion 15 using a paint on a surface of a side portion 12. The decoration portion 15 has a white paint layer 16 formed on at least a part of the decoration portion 15, a color paint layer 17 disposed by laminating on the white paint layer 16 and having a thickness less than the thickness of the white paint layer 16, and a protective layer 18 disposed by laminating on the color paint layer 17 and having the thickness less than the thickness of the white paint layer 16. The elastic modulus of the protective layer is larger than the elastic modulus of the white paint layer and the color paint layer. A thickness of the decoration portion 15 as a whole, including the white paint layer 15, the color paint layer 17 and the protective layer 18, is 150 ?m or less.
    Type: Application
    Filed: April 21, 2014
    Publication date: May 5, 2016
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Keita OSHIKANE, Nobuyuki HIRAI, Takashi KUWAHARA, Kentaro MIZOTANI, Yuki NAKAMURA
  • Publication number: 20150369340
    Abstract: A drive power transmission device is provided that either disengages a first friction engagement element or a second friction engagement element when the other is engaged. The drive power transmission device detects the temperature of lubricating oil flowing in each friction engagement element using a temperature sensor. The drive power transmission device selectively disengages either a forward clutch or a reverse brake disengages when the other is engaged. The forward clutch and the reverse brake overlap axially, and are layered radially in an inner/outer arrangement. The temperature sensor is positioned at the periphery of the forward clutch and the reverse brake. A lubricating oil pathway is formed such that lubricating oil for cooling the forward clutch and the reverse brake passes through the forward clutch and the reverse brake in the radial direction from the inside of the forward clutch and the reverse brake to the temperature sensor.
    Type: Application
    Filed: December 25, 2013
    Publication date: December 24, 2015
    Applicant: NISSAN MOTOR Co., Ltd.,
    Inventors: Takuhiro SUGIMOTO, Shigeru ISHII, Kazuhiro MIYACHI, Takashi KUWAHARA