Patents by Inventor Yutaka Ishikawa

Yutaka Ishikawa 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: 20210343447
    Abstract: A core wire for multi-core cables includes a conductor obtained by twisting a plurality of elemental wires, and an insulating layer coated on an outer peripheral surface of the conductor. The insulating layer contains polyethylene-based resin as a main component, and the product of a linear expansion coefficient C1 of the insulating layer in the range of 25° C. to ?35° C. and an elastic modulus E1 at ?35° C., namely (C1×E1), is 0.01 MPaK?1 or more and 0.90 MPaK?1 or less. The melting point of the polyethylene-based resin is 80° C. or higher and 130° C. or lower.
    Type: Application
    Filed: July 15, 2021
    Publication date: November 4, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yutaka MATSUMURA, Shigeyuki TANAKA, Taro FUJITA, Takaya KOHORI, Masayuki ISHIKAWA
  • Publication number: 20210319929
    Abstract: Provided is an insulated electrical cable including: a core wire made up of at least one insulated wire including a conductor and an insulating layer covering the conductor; an inner sheath layer covering the core wire; and an outer sheath layer covering the inner sheath layer. The inner sheath layer has an elastic modulus A at ?30° C. in a range from 10 MPa to 1000 MPa.
    Type: Application
    Filed: July 19, 2019
    Publication date: October 14, 2021
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Yutaka MATSUMURA, Shigeyuki TANAKA, Taro FUJITA, Takaya KOHORI, Masayuki ISHIKAWA
  • Publication number: 20210300320
    Abstract: A hybrid vehicle control apparatus including a torque converter temperature detector detecting a torque converter temperature, a rotor temperature detector detecting a rotor temperature, a stator temperature detector detecting a stator temperature, and an electronic control unit including a microprocessor. The microprocessor is configured to perform controlling an engine, a transmission, a lockup clutch, a motor-generator and a stator cooling device based on the torque converter temperature detected by the torque converter temperature detector, the rotor temperature detected by the rotor temperature detector and the stator temperature detected by the stator temperature detector so that the torque converter temperature is equal to or lower than a first predetermined temperature, the rotor temperature is equal to or lower than a second predetermined temperature and the stator temperature is equal to or lower than a third predetermined temperature.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 30, 2021
    Inventors: Yuya Tachibanada, Yutaka Ishikawa, Shintaro Kameda
  • Publication number: 20210304918
    Abstract: Provided is an insulted electrical cable including a core wire and a coating layer covering the core wire. The core wire is made up of at least one insulated wire including a conductor and an insulating layer covering the conductor. A coating member is disposed between the core wire and the coating layer to cover the core wire. A coefficient of kinetic friction between the coating member and the insulating layer at ?30° C. is less than or equal to 0.20.
    Type: Application
    Filed: July 19, 2019
    Publication date: September 30, 2021
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Yutaka MATSUMURA, Shigeyuki TANAKA, Taro FUJITA, Takaya KOHORI, Masayuki ISHIKAWA
  • Patent number: 11103020
    Abstract: Described is sports upper clothing which as an improved cooling function and which includes a front body, a back body, and sleeves. In embodiments, each sleeve has a front portion located on a same side as the front body and a back portion located on a same side as the back body. The back portion is made of a fabric having a breathability value and the front portion has breathability value that is greater than the breathability value of the back portion.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: August 31, 2021
    Inventors: Makoto Fukuda, Kenichi Kitazume, Tatsuya Ishikawa, Mamoru Omuro, Yutaka Koga
  • Patent number: 11101054
    Abstract: A core wire for multi-core cables includes a conductor obtained by twisting a plurality of elemental wires, and an insulating layer coated on an outer peripheral surface of the conductor. The insulating layer contains polyethylene-based resin as a main component, and the product of a linear expansion coefficient C1 of the insulating layer in the range of 25° C. to ?35° C. and an elastic modulus E1 at ?35° C., namely (C1×E1) is 0.01 MPaK?1 or more and 0.90 MPaK?1 or less. The melting point of the polyethylene-based resin is 80° C. or higher and 130° C. or lower.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: August 24, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yutaka Matsumura, Shigeyuki Tanaka, Taro Fujita, Takaya Kohori, Masayuki Ishikawa
  • Patent number: 10823261
    Abstract: There is provided an automatic transmission capable of preventing deterioration of driving performance even when an engagement mechanism is not switched due to a failure. An automatic transmission includes a first brake which is always in a fixed state from a first forward gear stage to a predetermined gear stage and is in an open state at a gear stage with a higher speed than the predetermined gear stage, and a hydraulic sensor configured to detect whether the first brake is switched to the fixed state. When a transmission control device instructs the first brake to switch to the fixed state, and it is confirmed that the first brake is in an open state, the transmission control device instructs engagement mechanisms other than the first brake to perform switching so that a preliminary gear stage is able to be set.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: November 3, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuya Tachibanada, Soichi Sugino, Yutaka Ishikawa, Shunsuke Yoshida
  • Patent number: 10780886
    Abstract: Provided is a hydraulic pressure control device. A hydraulic pressure control device includes a solenoid valve configured to supply hydraulic pressure to switch between an engaged state and a released state of a lock-up clutch, and a transmission control device configured to control the solenoid valve. The solenoid valve supplies hydraulic pressure to switch between a parking locked state and a parking released state of a parking lock mechanism, in addition to switching of the lock-up clutch.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: September 22, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuya Tachibanada, Yutaka Ishikawa, Shunsuke Yoshida, Tomoaki Mukai
  • Patent number: 10724608
    Abstract: There is provided a transmission control device capable to switching a switching mechanism quickly. A transmission control device ECU controls an automatic transmission (3) and can receive information about a slope from a front and rear G sensor. The automatic transmission (3) includes a two-way clutch (F1) as a switching mechanism that is switchable between a reverse rotation prevention state in which forward rotation of a rotatable carrier (Cb) (eleventh element) is allowed and reverse rotation is prevented and a fixed state in which rotation of the element is prevented. When the range is switched to a parking range and a vehicle is not stopped on a slope, the transmission control device ECU switches the two-way clutch (F1) to the fixed state.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: July 28, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yutaka Ishikawa, Yuya Tachibanada
  • Patent number: 10703349
    Abstract: One solenoid valve included in a hydraulic pressure control device has at least two functions among the following (1) to (6) functions, (1) switching a state of a two-way clutch, (2) switching a state of a parking lock mechanism, (3) switching the supply of hydraulic pressure to a first brake that is put into an engaged state when a gear stage selected when driving of a vehicle starts is set, (4) controlling a line pressure adjustment valve so that a decrease in a line pressure is prevented when the temperature of a hydraulic fluid is a first predetermined temperature or higher, (5) preventing the occurrence of a creep phenomenon in a neutral range when the temperature of the hydraulic fluid is a second predetermined temperature or lower, and (6) boosting a line pressure by performing switching to another linear solenoid valve when the line pressure adjustment valve has failed.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: July 7, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuya Tachibanada, Yutaka Ishikawa
  • Patent number: 10626983
    Abstract: Provided is an automatic transmission capable of smoothly switching a switching mechanism. A control part ECU of a transmission recognizes an input torque and a friction torque when an instruction to switch a two-way clutch from a fixed state to a reverse rotation prevention state is received while a first clutch, a second clutch and a third clutch are in an open state, and switches the two-way clutch from the fixed state to the reverse rotation prevention state when the input torque is equal to or greater than the friction torque.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 21, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Ryohei Yamagishi, Yuya Tachibanada, Yutaka Ishikawa
  • Patent number: 10563679
    Abstract: Provided is a hydraulic pressure control device. A hydraulic pressure control device supplies hydraulic pressure to a piston using solenoid valves and performs 2:1 switching processing of stopping the supply of hydraulic pressure to the piston using a solenoid valve when the piston is switched to a parking locked state. When the piston is not switched to a side that is to be a parking locked state, hydraulic pressure is supplied to two solenoid valves, and 2:0 switching processing of stopping the supply of hydraulic pressure to the piston by solenoid valves is performed. Then, a reporting processing of reporting that at least one of the solenoid valves has failed is performed.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: February 18, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuya Tachibanada, Yutaka Ishikawa, Yusuke Yoshimura
  • Patent number: 10563735
    Abstract: There is provided an automatic transmission capable to preventing an output of a driving source in a neutral range from being transmitted to wheels without increasing the number of control valves which could fail. An automatic transmission includes a first brake, a third clutch, a third brake, a transmission control device configured to control the first brake, the third clutch, and the third brake, and a hydraulic sensor and a hydraulic switch configured to determine whether the first brake is under control of the transmission control device. When the hydraulic sensor and the hydraulic switch detect that the first brake is in an engaged state contrary to control of the transmission control device in a non-traveling range, the transmission control device switches the third clutch and the third brake to the engaged state.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: February 18, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuya Tachibanada, Yutaka Ishikawa, Sadahito Kajihara
  • Patent number: 10557545
    Abstract: A control apparatus of an automatic transmission, which includes a mechanical engaging mechanism functioning as a brake, includes a determination unit determining, when a selected gear is a lowest forward speed gear, and the mechanism is in a second state, whether to switch the mechanism to the first state, and a switching processing unit switching the mechanism to the first state based on a determination result. In the first state, only rotation of a predetermined rotational element provided in planetary gear mechanisms in a first direction is restricted. In the second state, rotation of the predetermined rotational element in both the first and second direction is restricted. The determination unit determines to switch the mechanism to the first state at least on condition that a driving force is larger than a predetermined driving force.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: February 11, 2020
    Assignee: HONDA MOTOR CO., LTD
    Inventors: Yuya Tachibanada, Yutaka Ishikawa, Tetsuya Mochizuki, Koichi Fushimi, Masaya Tamai, Ryohei Yamagishi
  • Patent number: 10458538
    Abstract: A control apparatus for an automatic transmission including a torque converter with a lock-up clutch capable of connecting an output shaft of an engine and an input shaft of the automatic transmission includes a release determination unit configured to determine based on a deceleration and a reference deceleration whether to change an engaging state of an engaging mechanism that constitutes the set gear range of the automatic transmission to a release state when a brake operation is detected, and a control unit configured to control the engaging mechanism based on determination of the release determination unit.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 29, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Fumio Egashira, Yasuyuki Hibino, Yutaka Ishikawa
  • Patent number: 10451179
    Abstract: A control apparatus for a vehicle automatic transmission includes a downshift determining unit that determines whether downshift of a gear shift stage is to be performed based on at least one of a history of lateral accelerations and a history of variations of a vehicle speed. A lateral acceleration history acquiring unit or a vehicle speed variation history acquiring unit returns at least one of the history of the lateral accelerations and the history of the variations of the vehicle speed to an initial value when a shift control mode determined by a shift control mode determining unit is switched. At least one of the initial value of the history of the lateral accelerations and the initial value of the history of the variations of the vehicle speed is a value that is set for each shift control mode determined by the shift control mode determining unit.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: October 22, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuma Sasahara, Yutaka Ishikawa
  • Patent number: 10408346
    Abstract: A parking lock apparatus includes an engaging mechanism, a slider, a hydraulic circuit, and a processor. The engaging mechanism is to prevent a rotation of a rotating body when the engaging mechanism is in a mechanical engagement state. The slider is to switch a state of the engaging mechanism between the mechanical engagement state and a mechanical disengagement state in accordance with a position of the slider. The hydraulic circuit is to change the position of the slider. The processor is configured to increase line pressure in the hydraulic circuit when the engaging mechanism is in the mechanical engagement state.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: September 10, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yutaka Ishikawa, Yuya Tachibanada, Tetsuya Mochizuki, Shunsuke Yoshida
  • Patent number: 10371253
    Abstract: A power transmission includes a first brake, a pressure regulating valve, an accumulator, an oil temperature sensor, a second electromagnetic valve allowing supply of working oil to a piston, and a power transmission control device. The power transmission control device includes a memory relating and storing a working oil temperature and a permission time configured to allow release of the accumulator, and a receiver unit receiving a starting request. The accumulator is connected such that the working oil, in which the pressure is accumulated, can be supplied to the first brake and the piston. The power transmission control device sets a permission time corresponding to a temperature of the working oil on the basis of the memory. The working oil, in which the pressure is accumulated, is supplied to the first brake only during the permission time when restart information is received, while a vehicle performs idling stop control.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: August 6, 2019
    Assignee: Honda Motor Co.,Ltd.
    Inventors: Yuya Tachibanada, Yutaka Ishikawa
  • Patent number: 10330194
    Abstract: A control apparatus for an automatic transmission including a torque converter with a lock-up clutch capable of connecting the output shaft of an engine and the input shaft of the automatic transmission includes a state determination unit configured to determine, based on an operation signal from an ABS device, whether the ABS device of a vehicle is in a normally operating state or in a fail state, a rotation speed determination unit configured to determine whether the rotation speed of the input shaft is not less than a reference rotation speed, and an operation control unit configured to control engagement of the lock-up clutch based on the operation state of the ABS device and the result of comparison between the rotation speed of the input shaft and the reference rotation speed.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: June 25, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Fumio Egashira, Yasuyuki Hibino, Yutaka Ishikawa
  • Patent number: 10267416
    Abstract: A control apparatus of an automatic transmission connected to an internal combustion engine of a vehicle includes a determination unit configured to determine an operation state of a hydraulic oil temperature sensor based on comparison between a threshold and a difference between a hydraulic oil temperature of the automatic transmission and a cooling water temperature of the internal combustion engine. When the operation state of the hydraulic oil temperature sensor is determined as normal by the comparison with the threshold, the determination unit further determines the operation state of the hydraulic oil temperature sensor based on an operation state of an oil pressure sensor determined using the hydraulic oil temperature, an oil pressure of hydraulic oil, and a rotation speed.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: April 23, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yutaka Ishikawa, Yuya Tachibanada