Patents by Inventor Keisuke Sasaki

Keisuke Sasaki 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: 10272687
    Abstract: A recording apparatus includes: a center frame that supports a recorder which performs recording on a medium; and at least two side frames positioned with the center frame interposed therebetween. The two side frames include: a first sub-frame to which both of a first feeder and a second feeder that feed a medium are mountable, the second feeder differing from the first feeder in the position from which to feed a medium; and a second sub-frame to which one of the first feeder and the second feeder is mountable. The second sub-frame includes a support portion that supports a power transmission unit which transmits drive power from a motor to the first feeder or the second feeder, the motor being a drive source necessary to feed a medium.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: April 30, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Keisuke Sasaki, Kazuo Saito
  • Publication number: 20190010887
    Abstract: An electronic control unit of a control device for an internal combustion engine executes, for a first cycle, first drive processing for controlling an actuator such that a pin drive operation is executed for switching from a first cam to a second cam, executes second drive processing for controlling the actuator such that the pin drive operation is executed again for a second cycle, and executes abnormality determination processing for determining that a cam switching mechanism has an abnormality in a case where a pin returns to a reference position by using a pin return section following a cam switching section of the first cycle after the execution of the first drive processing and the pin returns to the reference position by using the pin return section following the cam switching section of the second cycle after the execution of-the second drive processing.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 10, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke SASAKI, Noriyasu ADACHI, Shigehiro SUGIHIRA, Takayoshi KAWAI, Shinji SADAKANE, Kaoru OTSUKA
  • Publication number: 20180306069
    Abstract: Provided is a control device for an internal combustion engine equipped with a cam switching device including a cam groove provided on the outer peripheral surface of a camshaft and an electromagnetic solenoid type actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The control device is configured, in causing the cam switching device to perform a cam switching operation, to perform energization of the actuator such that the engagement pin is seated on a forward outer peripheral surface, and to more lower, when an electric current (coil current) flowing through the actuator as a result of the energization is greater, an average electric voltage per unit time applied to the actuator in protruding the engagement pin toward the cam groove from the forward outer peripheral surface.
    Type: Application
    Filed: March 7, 2018
    Publication date: October 25, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Noriyasu ADACHI, Keisuke SASAKI, Shigehiro SUGIHIRA, Takayoshi KAWAI, Shinji SADAKANE, Hiroyuki SUGIHARA, Kaoru OHTSUKA
  • Publication number: 20180283225
    Abstract: A control device is configured, if, although the control device has caused a cam switching device to perform a first cam switching operation for switching the profiles of all the valve-driving cams of a plurality of cylinders from a first profile to a second profile, the profiles of all the valve-driving cams of the plurality of cylinders do not coincide with the second profile, to cause the cam switching device to perform a second cam switching operation for switching the profile of the valve-driving cam for at least one or more normal cylinders that are one or more cylinders at which the switching of profiles to the second profile has succeeded.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 4, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji SADAKANE, Hiroyuki Sugihara, Noriyasu Adachi, Keisuke Sasaki, Shigehiro Sugihira, Takayoshi Kawai, Kaoru Ohtsuka
  • Publication number: 20180274393
    Abstract: At crank angle CA10 at which the switch request of the drive cam was issued, the ejection operations of the pins at all the solenoid actuators started simultaneously. The ejected pins are seated on the cam carriers at erank angle CA12. The pin seated on the cam carrier moves along the grooves in accordance with the rotation of the cam carrier. The earliest finish timing of the switch operation of the drive cam is at crank angle CA13 (#4 cylinder). At the crank angle CA13, drive of the fuel injector and the ignition device in each cylinder is permitted.
    Type: Application
    Filed: January 23, 2018
    Publication date: September 27, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takayoshi KAWAI, Noriyasu ADACHI, Shigehiro SUGIHIRA, Keisuke SASAKI, Kaoru OTSUKA, Shinji SADAKANE, Hiroyuki SUGIHARA
  • Publication number: 20180272719
    Abstract: A recording apparatus includes: a center frame that supports a recorder which performs recording on a medium; and at least two side frames positioned with the center frame interposed therebetween. The two side frames include: a first sub-frame to which both of a first feeder and a second feeder that feed a medium are mountable, the second feeder differing from the first feeder in the position from which to feed a medium; and a second sub-frame to which one of the first feeder and the second feeder is mountable. The second sub-frame includes a support portion that supports a power transmission unit which transmits drive power from a motor to the first feeder or the second feeder, the motor being a drive source necessary to feed a medium.
    Type: Application
    Filed: March 5, 2018
    Publication date: September 27, 2018
    Inventors: Keisuke SASAKI, Kazuo SAITO
  • Publication number: 20180252125
    Abstract: An internal combustion engine system is provided with a cam switching device including a cam groove provided on the outer peripheral surface or a camshaft and an actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The internal combustion engine system is configured, in causing the cam switching device to perform a cam switching operation, to control the actuator such that the engagement pin is seated on a forward outer peripheral surface which is located more forward than an end of the cam groove on the forward side with respect to an insert section of the cam groove in the rotational direction of the camshaft.
    Type: Application
    Filed: January 8, 2018
    Publication date: September 6, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke SASAKI, Noriyasu ADACHI, Shigehiro SUGIHIRA, Takayoshi KAWAI, Shinji SADAKANE, Hiroyuki SUGIHARA, Kaoru OHTSUKA
  • Publication number: 20180230869
    Abstract: In a system that selects a large-cam as a driving cam at a time of a start of an engine, when an engine stop request is output, it is determined whether there is a small-cam cylinder for which a small-cam is selected as the driving cam. In a case where it is determined that there is a small-cam cylinder, a switching command for switching the driving cam from the small-cam to the large-cam is output. When an engine start request is output, the above determination is performed again. In a case where it is determined that there is a small-cam cylinder, the switching command is output to all solenoid actuators again. In addition, the drive of the fuel injector is suspended until the switching operation of the driving cam is completed for all cylinders.
    Type: Application
    Filed: February 5, 2018
    Publication date: August 16, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigehiro SUGIHIRA, Noriyasu ADACHI, Keisuke SASAKI, Takayoshi KAWAI, Kaoru OTSUKA, Shinji SADAKANE, Hiroyuki SUGIHARA
  • Patent number: 10030596
    Abstract: In starting the engine, if it is determined that large cams are not completely prepared for all driving cams, valve closing timings of all intake valves are changed by driving the VVT so that all of the cylinders have equal in-cylinder filling efficiency. A fuel injection amount of each cylinder is determined by a feedforward control assuming that the large cams are completely prepared for all of the driving cams. When the valve closing timing of all of the intake valves are changed by driving the VVT to equalize the in-cylinder filling efficiencies of all of the cylinders, all of the cylinders have substantially equal in-cylinder air-fuel ratios.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: July 24, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Sugihara, Kaoru Otsuka, Shinji Sadakane, Noriyasu Adachi, Shigehiro Sugihira, Keisuke Sasaki, Takayoshi Kawai
  • Publication number: 20180202329
    Abstract: When a stop request to the engine is issued, it is determined whether or not all of the drive cams are large cams. When it is determined that at least one of the small cams is included in the drive cams, the engine is continued to drive for a while and a switch control for switching the drive cams from the small cams to the large cams is executed within the duration. A self-holding type solenoid is used to switch between the small cams and the large cams. In the switch control, a permission to stop the engine is output at a timing when the “pin protrudable section” of the final cylinder #2 has elapsed.
    Type: Application
    Filed: November 13, 2017
    Publication date: July 19, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kaoru OHTSUKA, Hiroyuki SUGIHARA, Shinji SADAKANE, Noriyasu ADACHI, Shigehiro SUGIHIRA, Keisuke SASAKI, Takayoshi KAWAI
  • Publication number: 20180163654
    Abstract: In starting the engine, if it is determined that large cams are not completely prepared for all driving cams, valve closing timings of all intake valves are changed by driving the VVT so that all of the cylinders have equal in-cylinder filling efficiency. A fuel injection amount of each cylinder is determined by a feedforward control assuming that the large cams are completely prepared for all of the driving cams. When the valve closing timing of all of the intake valves are changed by driving the VVT to equalize the in-cylinder filling efficiencies of all of the cylinders, all of the cylinders have substantially equal in-cylinder air-fuel ratios.
    Type: Application
    Filed: October 16, 2017
    Publication date: June 14, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki SUGIHARA, Kaoru OTSUKA, Shinji SADAKANE, Noriyasu ADACHI, Shigehiro SUGIHIRA, Keisuke SASAKI, Takayoshi KAWAI
  • Patent number: 9969585
    Abstract: A recording apparatus includes a hopper which is provided with a mounting surface on which a medium is set, and which is provided to be capable of swinging between a first posture in which the mounting surface of the medium is in a fallen state, and a second posture in which the mounting surface is in an uplifted state, a first pathway that delivers rolled paper, as the medium, to the hopper from an upstream side thereof, a second pathway that delivers cut form paper, as the medium, to the hopper from an upstream side thereof, and a first sensor that detects the medium in the first pathway, wherein the hopper swings from the first posture in a direction that assumes the second posture on the basis of detection of the medium by the first sensor.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: May 15, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Narihiro Oki, Shinji Kanemaru, Shintaro Miyamoto, Keisuke Sasaki
  • Patent number: 9961220
    Abstract: A recording apparatus includes a rotating body that opens and closes an apparatus main body which is provided with a recording portion that performs recording on a medium and rotates between a first posture that is a closed posture and a second posture that is an open posture, a biasing unit that biases the rotating body in an opening direction, and a biasing release unit that releases an action of a biasing force applied by the biasing unit to the rotating body in a range from a third posture, which is a posture between the first posture and the second posture, to the second posture.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: May 1, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Keisuke Sasaki, Yosuke Nakano, Satoshi Yoshino
  • Publication number: 20180087993
    Abstract: A pressure detection device includes: a cylindrical body made of a conductor; a pressure receiver made of a conductor, the pressure receiver being mounted to one end side of the body and receiving pressure from the outside; a signal generator arranged inside the body, the signal generator being electrically connected to the pressure receiver and generating a signal corresponding to the pressure received by the pressure receiver; and a cover made of an insulator with a lower thermal conductivity than thermal conductivities of the body and the pressure receiver, the cover continuously covering an outer surface of the pressure receiver and a portion of an outer surface of the body, the portion being located at a side closer to the pressure receiver.
    Type: Application
    Filed: September 21, 2017
    Publication date: March 29, 2018
    Applicants: CITIZEN FINEDEVICE CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, CITIZEN WATCH CO., LTD.
    Inventors: Yusuke SATOH, Kazuo TAKAHASHI, Aki SUDO, Keisuke SASAKI, Masakatsu NAGAI
  • Patent number: 9896357
    Abstract: Provided is an electrodeionization apparatus for producing deionized water, capable of removing or reducing a biased flow of electric current in a deionization chamber. In the electrodeionization apparatus for producing deionized water, at least one deionization treatment unit including the deionization chamber and a pair of concentration chambers adjacent to both sides of the deionization chamber is disposed between a cathode and an anode. In the deionization chamber, anion exchanger layers and cation exchanger layers are stacked in an order in which a last ion exchanger layer through which water to be treated passes is an anion exchanger layer. A bipolar membrane is formed on the cathode side of the anion exchanger layer in the deionization chamber. The anion exchange membrane of the bipolar membrane is in contact with the anion exchanger layer.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: February 20, 2018
    Assignee: ORGANO CORPORATION
    Inventors: Naho Ikeda, Yuji Asakawa, Keisuke Sasaki, Kazuya Hasegawa
  • Patent number: 9890754
    Abstract: An internal combustion engine is provided that executes fuel injection and ignition with respect to a cylinder that remains stopped in an expansion stroke, and that performs ignition startup that starts up the internal combustion engine by rotationally driving a crankshaft by pressure of combustion accompanying the fuel injection. A motor generator (MG) that can rotationally drive the crankshaft is provided. A required assist torque Ast_trq exerted by the MG at the time of ignition startup is determined based on a maximum value Cyl_prss of an in-cylinder pressure that is detected by an in-cylinder pressure sensor at the time of ignition startup. The MG is controlled at the time of ignition startup based on the required assist torque Ast_trq that is determined.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: February 13, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masakatsu Nagai, Shigeyuki Urano, Keisuke Sasaki, Rui Onoda
  • Publication number: 20180038297
    Abstract: A control system is applied to an internal combustion engine having a plurality of cylinders, a variable compression ratio changer configured to change the compression ratio of each of the cylinders of the internal combustion engine individually, in-cylinder injection valves that inject fuel into the respective cylinders, and in-passage injection valves each of which injects fuel into an intake passage corresponding to each of the cylinders. To reduce differences in the air-fuel ratio among the cylinders during changing the compression ratio, the control system makes the proportion of the quantity of fuel injected through the in-passage injection valves to the total quantity of fuel injected through the in-cylinder injection valves and the in-passage injection valves larger during the time in which the compression ratios of all the cylinders are being changed than during the time in which the compression ratios of all the cylinders are fixed.
    Type: Application
    Filed: August 1, 2017
    Publication date: February 8, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke SASAKI, Akira EIRAKU, Masanori HATTORI, Yoshiyuki KAGEURA, Teppei YOSHIOKA, Shinichi HIRAOKA
  • Publication number: 20180030906
    Abstract: To improve accuracy in misfire determination, a control apparatus for an internal combustion engine that controls an internal combustion engine having a variable compression ratio mechanism capable of changing the compression ratio of the internal combustion engine includes a controller configured to: determine that a misfire occurs if the magnitude of rotational fluctuation of the internal combustion engine is equal to or larger than a misfire criterion value and to make the misfire criterion value larger during the time in which changing of the compression ratio of the internal combustion engine is in progress than during the time in which the compression ratio is not being changed.
    Type: Application
    Filed: July 26, 2017
    Publication date: February 1, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke SASAKI, Akira EIRAKU, Masanori HATTORI, Yoshiyuki KAGEURA, Teppei YOSHIOKA, Shinichi HIRAOKA
  • Patent number: 9840978
    Abstract: A control device for an internal combustion engine is provided that can detect the adherence of deposits to a cylinder pressure sensor without subjecting the internal combustion engine to an impact or the like. A control device for an internal combustion engine equipped with a cylinder pressure sensor detects changes in the sensitivity of the cylinder pressure sensor. If the control device detects a decrease in the sensitivity of the cylinder pressure sensor after detecting an increase in the sensitivity of the cylinder pressure sensor, the control device determines that deposits are adhered to the cylinder pressure sensor.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: December 12, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Sasaki, Masakatsu Nagai, Shigeyuki Urano
  • Publication number: 20170315241
    Abstract: A radiation monitor for accurately measuring the dose rate of radiation by suppressing the risk of explosion or the like is provided. The radiation monitor includes a radiation emitting element which includes a light emitting part emitting light of an intensity corresponding to a dose rate of incident radiation, an optical fiber which is connected to the radiation emitting element and transmits the light emitted from the light emitting part, an electric pulse converter which is connected to the optical fiber and transmits one electric pulse for one photon of the transmitted light, an electric pulse detector which is connected to the electric pulse converter and counts the electric pulse transmitted from the electric pulse converter, and an analyzer which is connected to the electric pulse detector and converts the electric pulse count rate obtained by the electric pulse detector into a radiation dose rate.
    Type: Application
    Filed: November 27, 2015
    Publication date: November 2, 2017
    Applicant: HITACHI, LTD.
    Inventors: Takahiro TADOKORO, Kazuo TOMINAGA, Katsunori UENO, Kouichi OKADA, Yasushi NAGUMO, Hitoshi KUWABARA, Keisuke SASAKI