Patents by Inventor Yoshihiko Tsuzuki

Yoshihiko Tsuzuki 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: 20230242185
    Abstract: A vehicle floor structure according to an aspect of the present disclosure is a vehicle floor structure including: a floor pan; an upper surface-side reinforcing member joined to an upper surface of the floor pan; and a lower surface-side reinforcing member joined to a lower surface of the floor pan. The floor pan is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate is formed on the upper surface thereof but is not formed on the lower surface thereof. The lower surface-side reinforcing member is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate is formed on a surface thereof in contact with the floor pan.
    Type: Application
    Filed: December 7, 2022
    Publication date: August 3, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuyo KONDO, Hiroshi KAWAGUCHI, Yoshihiko TSUZUKI
  • Publication number: 20230242186
    Abstract: A vehicle floor structure according to an aspect of the present disclosure includes a floor pan, an upper surface-side reinforcing member joined to an upper surface of the floor pan, and a lower surface-side reinforcing member joined to a lower surface of the floor pan. The floor pan is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate includes a first resin layer formed on the upper surface of the floor pan and a second resin layer formed on a part of the lower surface of the floor pan that is in contact with the lower surface-side reinforcing member.
    Type: Application
    Filed: December 8, 2022
    Publication date: August 3, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuyo KONDO, Hiroshi KAWAGUCHI, Yoshihiko TSUZUKI
  • Publication number: 20230226991
    Abstract: A vehicle structure according to an aspect of the present disclosure includes: a body; a bumper reinforcement disposed at a front or a rear of the body; and a crash box, one end of the crash box being joined to an outer end of the body in a front-rear direction and the other end of the crash box being joined to the bumper reinforcement, in which at least one of the body and the crash box is formed of a resin-coated steel plate, and a resin layer of the resin-coated steel plate is formed on a contact surface between the body and the crash box.
    Type: Application
    Filed: December 7, 2022
    Publication date: July 20, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masayuki MOTOBE, Nobuyo KONDO, Hiroshi KAWAGUCHI, Yoshihiko TSUZUKI
  • Publication number: 20230192194
    Abstract: A vehicle roof capable of ensuring a rust prevention property while preventing or reducing the increase in cost is provided. A vehicle roof includes an attachment part to which a hinge is attached. The attachment part includes a steel plate, and a first resin layer covering a surface of the steel plate on the side on which the hinge is located. The surface of the steel plate of the attachment part on the side on which the hinge is located is coated with a first resin layer. The first resin layer is thicker than a hinge resin layer covering the hinge. According to the structure of the vehicle roof, it is possible to ensure a rust prevention property while preventing the increase in cost.
    Type: Application
    Filed: November 21, 2022
    Publication date: June 22, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuya TANAKA, Tomoaki MATSUOKA, Yoshihiko TSUZUKI, Nobuyo KONDO
  • Patent number: 8642132
    Abstract: A method of depositing a carbon particle-containing film that contains carbon particles includes: manufacturing film deposition slurry by mixing liquid into film deposition powder that contains carbon powder formed of the carbon particles; and depositing the carbon particle-containing film by spraying the film deposition slurry to a surface of a base material so that the liquid is vaporized.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: February 4, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noritaka Miyamoto, Yoshihiko Tsuzuki, Tomoko Kozaki
  • Patent number: 8499825
    Abstract: The present invention provides a method for manufacturing a heat transfer member which method allows peel-off and cracking possibly caused by thermal expansion to be inhibited. That is, the present invention provides a method for manufacturing a heat transfer member 10, the method at least including a step of forming metal powder into a coating film 12 on a surface of a base material 11 by spraying the metal powder in a solid state onto the surface of the base material 11 together with compressed gas. In the film forming step, a spraying pressure at which the metal powder is sprayed onto the surface of the base material 11 is set so that the coating film 12 has a porous structure.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: August 6, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshihiko Tsuzuki, Noritaka Miyamoto
  • Patent number: 8025921
    Abstract: There is provided a film forming method capable of enhancing adhesion efficiency of a metal powder by use of a low-pressure compressed gas even in the case of spraying the metal powder remaining in a solid-phase state to a substrate, to form a film, the method being a film forming method of spraying a metal powder p in a solid-phase state to a surface 11a of a substrate 11 along with a compressed gas, to form a film 12 of the metal powder p on the surface 11a of the substrate 11, wherein a powder, which at least contains a powder for film formation having an apparent density of 1.4 to 2.0 g/cm3 and an average grain size of not larger than 25 ?m, is used as the metal powder p.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: September 27, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noritaka Miyamato, Yoshihiko Tsuzuki
  • Publication number: 20100296253
    Abstract: A method of depositing a carbon particle-containing film that contains carbon particles includes: manufacturing film deposition slurry by mixing liquid into film deposition powder that contains carbon powder formed of the carbon particles; and depositing the carbon particle-containing film by spraying the film deposition slurry to a surface of a base material so that the liquid is vaporized.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 25, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noritaka Miyamoto, Yoshihiko Tsuzuki, Tomoko Kozaki
  • Publication number: 20100230086
    Abstract: The present invention provides a method for manufacturing a heat transfer member which method allows peel-off and cracking possibly caused by thermal expansion to be inhibited. That is, the present invention provides a method for manufacturing a heat transfer member 10, the method at least including a step of forming metal powder into a coating film 12 on a surface of a base material 11 by spraying the metal powder in a solid state onto the surface of the base material 11 together with compressed gas. In the film forming step, a spraying pressure at which the metal powder is sprayed onto the surface of the base material 11 is set so that the coating film 12 has a porous structure.
    Type: Application
    Filed: July 17, 2008
    Publication date: September 16, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshihiko Tsuzuki, Noritaka Miyamoto
  • Publication number: 20100073883
    Abstract: There is provided a film forming method capable of enhancing adhesion efficiency of a metal powder by use of a low-pressure compressed gas even in the case of spraying the metal powder remaining in a solid-phase state to a substrate, to form a film, the method being a film forming method of spraying a metal powder p in a solid-phase state to a surface 11a of a substrate 11 along with a compressed gas, to form a film 12 of the metal powder p on the surface 11a of the substrate 11, wherein a powder, which at least contains a powder for film formation having an apparent density of 1.4 to 2.0 g/cm3 and an average grain size of not larger than 25 ?m, is used as the metal powder p.
    Type: Application
    Filed: June 11, 2008
    Publication date: March 25, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noritaka Miyamato, Yoshihiko Tsuzuki
  • Patent number: 5343393
    Abstract: A steering angle detecting apparatus for accurately and surely detecting a steering angle of a motor vehicle. The apparatus is equipped with a turning angle detector for detecting a turning angle of a steering wheel of the motor vehicle. In addition, the apparatus estimates a turning angle of the steering wheel on the basis of the difference in speed between left and right wheels of the motor vehicle so as to calculate the difference in phase between the detection turning angle and the estimation turning angle. For detecting the accurate vehicle steering angle, the detection turning angle is corrected on the basis of the calculated phase difference therebetween.
    Type: Grant
    Filed: June 4, 1991
    Date of Patent: August 30, 1994
    Assignee: Nippondenso Co., Ltd.
    Inventors: Hiroyuki Hirano, Yoshihiko Tsuzuki, Satoshi Haseda, Akira Fukushima, Hideo Inoue, Osamu Takeda
  • Patent number: 5285390
    Abstract: A signal processing circuit for removing a noise component from a detection signal of a yaw-rate sensor for detecting a yaw rate generated in a motor vehicle. The processing circuit detects the magnitude of variation of the detection signal of the yaw-rate sensor so as to compare the magnitude of the detection signal with a predetermined reference value. In accordance with the comparison result, the processing circuit outputs a limitation detection signal to limit the variation to below the predetermined reference value. Further, when the magnitude of variation of the detection signal exceeds the predetermined reference value, the processing circuit outputs as the limitation detection signal the yaw rate detection signal immediately before the exceeding, and the predetermined reference value is corrected on the basis of the steering angular velocity of the steering wheel of the motor vehicle. This arrangement allows effectively eliminating a spear-like noise from the detection signal of the yaw-rate sensor.
    Type: Grant
    Filed: June 4, 1991
    Date of Patent: February 8, 1994
    Assignee: Nippondenso Co., Ltd.
    Inventors: Satoshi Haseda, Yoshihiko Tsuzuki, Ichiro Akahori, Hideo Inoue, Osamu Takeda
  • Patent number: 4836319
    Abstract: A steering apparatus for use in a motor vehicle whereby the actual steering angle of a vehicle wheel is controlled to be equal to a target steering angle. The steering apparatus includes a steering mechanism for regulating a steering angle of the vehicle wheel in accordance with an input signal thereto, a device for determining a target steering angle of the wheel in accordance with the vehicle travelling state, a device for obtaining the difference (X1) between the determined target steering angle and the actual steering angle of the wheel, and a device for calculating a steering angular velocity (X2) on the basis of the actual steering angle. A control device calculates at least two switching functions (L1), (L2) on the basis of the obtained difference (X1) and the calculated steering angular velocity (X2) for obtaining a switching line on the basis of the calculated switching functions (L1), (L2).
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: June 6, 1989
    Assignee: Nippondenso Co., Ltd.
    Inventors: Satoshi Haseda, Yoshihiko Tsuzuki, Yoshimune Konishi, Motoshi Suzuki
  • Patent number: 4653454
    Abstract: Disclosed is a fuel injection quantity control system incorporated with a fuel injection pump with a solenoid-operated spill valve wherein a control signal is generated for cutting off a fuel supply to engine cylinders when a rotational phase angle of a drive shaft of the fuel injection pump is coincident with a desired spill phase angle determined in accordance with engine operating conditions. The desired spill phase angle, i.e., the opening timing of the spill valve is controlled in accordance with the rotational variations of the fuel injection pump. The desired spill phase angle is divided by unit angle corresponding to a detection period of rotational angle signals produced in accordance with the rotation of the pump drive shaft, obtaining a quotient and a remainder angle. The remainder angle is converted into a time on the basis of an engine speed.
    Type: Grant
    Filed: November 13, 1985
    Date of Patent: March 31, 1987
    Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshimune Konishi, Nobuhito Hobo, Yoshihiko Tsuzuki, Narutoshi Kameoka, Masahiko Miyaki, Hiroshi Koide
  • Patent number: 4603669
    Abstract: A fuel injection pump is described wherein a plunger is rotatingly and reciprocally movable in an enclosure to define a compression chamber which is connected to a fuel inlet during an intake stroke of the plunger and to a fuel outlet during a compression stroke thereby to initiate injection of fuel to the outlet. A solenoid valve is responsive to a voltage applied from a voltage source for providing a pressure relief action on the fuel in the compression chamber. A control unit is responsive to the onset of fuel injection to determine a basic timing at which fuel is to be terminated and corrects the basic timing as a function of the source voltage to compensate for a voltage variation thereof which would otherwise affect on the operation of the solenoid valve. The solenoid valve is then energized at the corrected timing.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: August 5, 1986
    Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Eiji Takemoto, Masahiko Miyaki, Hideaki Norimatsu, Nobuhito Hobo, Yoshihiko Tsuzuki, Yoshimune Konishi
  • Patent number: 4566417
    Abstract: A fuel injection arrangement for a diesel engine. An overflow passage for high pressure fuel is provided in the engine's fuel injection pump. A solenoid valve is disposed in the overflow passage for controlling the fuel injection amount through its on-off operation. The time when the fuel injection pump starts injecting fuel is detected by an injection start detector. To this injection starting time point is added a target injection period to determine an injection end time. At this injection end time the solenoid valve is opened to discontinue the fuel injection. The target injection period is determined according to operating conditions of the engine. Since this apparatus detects the actual injection start point and controls the injection period on the basis of the result of the detection, the fuel injection amount can be controlled extremely accurately.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: January 28, 1986
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yutaka Suzuki, Nobuhito Hobo, Yoshihiko Tsuzuki, Takashi Naito, Mikio Kumano, Tetsuya Nakamura, Satoshi Haseda, Akira Masuda
  • Patent number: 4503830
    Abstract: In a diesel engine controlling system having a fuel injection pump, a fuel injection timing adjusting device is controlled by a drive pulse signal whose duty cycle is controlled by a microcomputer. The duty cycle is determined such that a basic duty cycle obtained by using engine rotational speed and injection quantity, is modified or corrected by way of a correction factor and a forecast correction factor. The-first mentioned correction factor comprises an integration component and a proportional component both derived from the difference between a measured fuel injection or ignition timing and a desired or reference fuel injection or ignition timing, which is calculated by using the engine rotational speed and the injection quantity. The forecast correction factor corresponds to a differential value of the basic duty cycle or the desired fuel injection or ignition timing.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: March 12, 1985
    Assignee: Nippondenso Co., Ltd.
    Inventors: Tetsuya Nakamura, Nobuhito Hobo, Yoshihiko Tsuzuki, Yutaka Suzuki, Satoshi Haseda, Akira Masuda
  • Patent number: 4494511
    Abstract: In a fuel injection system which electrically controls an amount of pressurized fuel supplied to an internal combustion engine, an electromagnetic valve which opens to inject the pressurized fuel is disposed at an upstream of a throttle valve in an intake pipe so that a group of cylinders of the engine is supplied with fuel therefrom. A pressure regulator is provided to regulate a pressure of the pressurized fuel in proportion to an intake pressure present at a downstream of the throttle valve.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: January 22, 1985
    Assignee: Nippondenso Co., Ltd.
    Inventors: Osamu Ito, Nobuhito Hobo, Yoshihiko Tsuzuki, Yutaka Suzuki, Takashi Hasegawa
  • Patent number: 4461170
    Abstract: A fuel injection device for Diesel engines includes a combustion detector comprising a photoelectric transducer and a light path extended through a nozzle body to transmit the light of a combustion flame developed in an engine cylinder to the photoelectric transducer. One end of the light path is opened to an oil sump communicating with a nozzle opening so that only when the nozzle opening is opened for injecting fuel and then a combustion flame is developed, the light of the flame is passed through the light path and reaches the photoelectric transducer thereby generating an electric signal indicative of the actual time of the combustion. The whole or part of the light path may be comprised of optical fibers.
    Type: Grant
    Filed: November 9, 1982
    Date of Patent: July 24, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yutaka Suzuki, Taro Tanaka, Osamu Ito, Nobuhito Hobo, Yoshihiko Tsuzuki, Satoshi Haseda
  • Patent number: 4442424
    Abstract: A plurality of engine operating parameters and useful information items are monitored by respective sensors. A control unit receives signals from the sensors to display the monitored items in a varible format on a single viewing screen in accordance with the conditions of the monitored items. Abnormal condition of the monitored items is detected by the control unit to enlarge the display format to give an warning indication. A pushbutton is provided for each of the monitored items to generate a display command signal in response to a manual command to provide a display of a desired item in an enlarged format.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: April 10, 1984
    Assignee: Nippondenso Company, Limited
    Inventors: Shinji Shirasaki, Yoshihiko Tsuzuki, Yuzi Hirabayashi, Hiroshi Okazaki, Masahiro Matsuyama, Masanobu Kobayashi, Yoji Ito