Patents by Inventor Tatsuyuki Yamamoto

Tatsuyuki Yamamoto 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: 20240210855
    Abstract: A developer replenishment container configured to be detachably attachable to a developer replenishment device and replenish via the developer replenishment device is disclosed. The developer replenishment container including: a developer replenishment portion with a replenishment port; a developer accommodation portion having accommodate a developer; and an annular seal member for sealing a gap between the developer replenishment portion and the developer accommodation portion. The developer accommodation portion has an annular abutment portion provided at an end portion on a developer replenishment portion side in a direction of an axis which is a rotation center of the developer accommodation portion and provided to be in contact with the seal member in the direction of the axis; and a projecting portion provided near the abutment portion and provided to project toward the developer replenishment portion further than the abutment portion in the direction of the axis.
    Type: Application
    Filed: November 21, 2023
    Publication date: June 27, 2024
    Inventors: TATSUYUKI YAMAMOTO, AKIHITO KAMURA
  • Patent number: 10761447
    Abstract: A photosensitive unit includes a rotatable photosensitive member, a frame, a charging roller, an urging portion, a rotary member, a separation member, an abutting portion, and an abutted portion. The separation member includes an engagement portion capable of engaging with the rotary member. The separation member is configured to hold the charging roller at a separation position in a state in which the engagement portion is engaged with the rotary member. The abutting portion is provided on the separation member. The abutted portion is provided on the frame and is abutted by the abutting portion in a case in which the separation member moves in a direction to increase a distance between a swing center of the separation member and a rotation center of the rotary member in a state in which the engagement portion is engaged with the rotary member.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: September 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuyuki Yamamoto
  • Publication number: 20200096891
    Abstract: A photosensitive unit includes a rotatable photosensitive member, a frame, a charging roller, an urging portion, a rotary member, a separation member, an abutting portion, and, an abutted portion. The separation member includes an engagement portion capable of engaging with the rotary member. The separation member is configured to hold the charging roller at a separation position in a state in which the engagement portion is engaged with the rotary member. The abutting portion is provided on the separation member. The abutted portion that is provided on the frame and that the abutting portion abuts in a case where the separation member moves in a direction to increase a distance between a swing center of the separation member and a rotation center of the rotary member in a state in which the engagement portion is engaged with the rotary member.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 26, 2020
    Inventor: Tatsuyuki Yamamoto
  • Patent number: 10486547
    Abstract: Provided are a device for controlling an electric vehicle and a method of controlling an electric vehicle that are capable of appropriately suppressing a vibration. In the device for controlling an electric vehicle according to the present invention, when a motor configured to generate a torque for braking or driving a drive wheel is controlled based on a torque command value based on an accelerator operation or a brake operation by a driver and a vibration suppression control torque command value for suppressing a vibration component caused by a resonance of the vehicle, the vibration suppression control torque command value is restricted based on a state of the drive wheel during a travel.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: November 26, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke Suzuki, Hitoshi Kobayashi, Tatsuyuki Yamamoto
  • Patent number: 10144293
    Abstract: Provided is a driving force control device capable of stabilizing a vehicle behavior when a driving torque of a drive wheel is controlled. When slip suppression control is carried out to decrease a driving torque of a drive source that is connected to the drive wheel of a vehicle via a speed reduction mechanism and a drive shaft, and is configured to generate a torque for braking or driving the drive wheel, to thereby suppress a slip state of the drive wheel, the driving torque of the drive source is controlled so that a slip ratio of the drive wheel is in an area of the slip ratio smaller than a slip ratio corresponding to a peak value of a road surface friction coefficient in a characteristic of the road surface friction coefficient with respect to the slip ratio.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: December 4, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke Suzuki, Hitoshi Kobayashi, Tatsuyuki Yamamoto
  • Publication number: 20180120736
    Abstract: An image forming apparatus includes: a bottle which is detachably mounted on an apparatus body to store toner; a shutter which is disposed on the bottle to open and close a discharge port which discharges the toner; and a shutter slider which is disposed in the apparatus body to open and close the shutter by engaging therewith along with an insertion operation of the bottle. The shutter slider is disposed to be movable from a first position, which allows the shutter to be located at a closed position at which the discharge port is closed by the shutter when the bottle is mounted on the apparatus body, to a second position, in which the discharge port is to be opened and closed by the shutter along with an operation of attaching and detaching the bottle to and from the apparatus body.
    Type: Application
    Filed: December 29, 2017
    Publication date: May 3, 2018
    Inventors: Tatsuyuki Yamamoto, Takao Nakajima
  • Patent number: 9931962
    Abstract: Provided are a control device for an electric vehicle and a control method for an electric vehicle capable of appropriately suppressing a vibration. In the control device for an electric vehicle according to the present invention, when a torque is controlled that is generated by a motor configured to generate a torque for braking or driving a drive wheel via a speed reduction mechanism and a drive shaft coupled to the speed reduction mechanism, the torque generated by the motor is controlled based on a rotational torque command value based on an accelerator operation or a brake operation by a driver, and a vibration suppression control torque command value for suppressing a vibration component caused by a resonance of the vehicle. Then, when a predetermined condition is satisfied, the torque generated by the motor is reduced.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: April 3, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke Suzuki, Hitoshi Kobayashi, Tatsuyuki Yamamoto
  • Patent number: 9927740
    Abstract: An image forming apparatus includes a rotatable bottle which is detachably attached to an apparatus main body and which stores toner, the rotatable bottle having a discharge port from which the stored toner is discharged, a shutter which is disposed on the bottle, and which opens and closes the discharge port, and an engaging member, which is movably disposed on the apparatus main body, and which is able to engage the shutter. The image forming apparatus further includes a driving portion which transfers a driving force to the rotatable bottle, and an opening mechanism which is configured to open the shutter by the driving force from the driving portion.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: March 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuyuki Yamamoto, Takao Nakajima
  • Patent number: 9885977
    Abstract: An image forming apparatus includes a rotatable bottle which is detachably attached to an apparatus main body and which stores toner, the rotatable bottle having a discharge port from which the stored toner is discharged, a shutter which is disposed on the bottle, and which opens and closes the discharge port, and an engaging member, which is movably disposed on the apparatus main body, and which is able to engage the shutter. The image forming apparatus further includes a driving portion which transfers a driving force to the rotatable bottle, and an opening mechanism which is configured to open the shutter by the driving force from the driving portion.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: February 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuyuki Yamamoto, Takao Nakajima
  • Patent number: 9827873
    Abstract: Provided is an electric vehicle control system capable of securing good response and slip stopping property with respect to changes in a road surface condition. The system includes a vehicle controller configured to calculate a driver's demand torque command value according to a driver's accelerating or braking operation, a first communication device capable of communicating between a hydraulic controller and a motor controller, and a second communication device capable of communicating between the vehicle controller and the motor controller. The system includes a control system in which the hydraulic controller transmits a motor torque command value to the motor controller through the first communication device; the vehicle controller transmits the driver's demand torque command value to the motor controller through the second communication device; and the motor controller selects either one of the received motor torque command value and the received driver's demand torque command value as the command value.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: November 28, 2017
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke Suzuki, Hitoshi Kobayashi, Tatsuyuki Yamamoto
  • Publication number: 20170334278
    Abstract: An object of the present invention is to provide a battery protection member capable of achieving both securement of a capability to allow a passenger to reside in a vehicle and protection of a battery at the same time. According to one aspect of the present invention, a battery protection member includes a hollow-shaped battery containing frame extending in a vehicle lateral direction of the vehicle. The battery containing frame includes a surface where a seat occupied by a driver is disposed on an outer surface side thereof. The battery containing frame is configured to contain the battery on an inner surface side thereof.
    Type: Application
    Filed: November 6, 2015
    Publication date: November 23, 2017
    Inventor: Tatsuyuki YAMAMOTO
  • Patent number: 9500987
    Abstract: A supplying device includes first and second bottles each including a bottle gear for inputting a driving force. A driving source drives a driving gear, and a swingable gear is in engagement with the driving gear. The swingable gear swings between a first drive transmitting position where the driving force is transmitted from the swingable gear to the first bottle gear in engagement with the first bottle gear, and a first retracted position, where the swingable gear is retracted from the first drive transmitting position. In addition, a movable gear is movable between a second drive transmitting position, where the driving force is transmitted from the swingable gear to the second bottle gear in engagement with both of the second bottle gear and the swingable gear located in the first retracted position, and a second retracted position where the movable gear is retracted from the second drive transmitting position.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: November 22, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tatsuyuki Yamamoto
  • Publication number: 20160221468
    Abstract: Provided are a device for controlling an electric vehicle and a method of controlling an electric vehicle that are capable of appropriately suppressing a vibration. In the device for controlling an electric vehicle according to the present invention, when a motor configured to generate a torque for braking or driving a drive wheel is controlled based on a torque command value based on an accelerator operation or a brake operation by a driver and a vibration suppression control torque command value for suppressing a vibration component caused by a resonance of the vehicle, the vibration suppression control torque command value is restricted based on a state of the drive wheel during a travel.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 4, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke SUZUKI, Hitoshi KOBAYASHI, Tatsuyuki YAMAMOTO
  • Publication number: 20160221467
    Abstract: Provided are a control device for an electric vehicle and a control method for an electric vehicle capable of appropriately suppressing a vibration. In the control device for an electric vehicle according to the present invention, when a torque is controlled that is generated by a motor configured to generate a torque for braking or driving a drive wheel via a speed reduction mechanism and a drive shaft coupled to the speed reduction mechanism, the torque generated by the motor is controlled based on a rotational torque command value based on an accelerator operation or a brake operation by a driver, and a vibration suppression control torque command value for suppressing a vibration component caused by a resonance of the vehicle. Then, when a predetermined condition is satisfied, the torque generated by the motor is reduced.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 4, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke SUZUKI, Hitoshi KOBAYASHI, Tatsuyuki YAMAMOTO
  • Publication number: 20160221446
    Abstract: Provided is a driving force control device capable of stabilizing a vehicle behavior when a driving torque of a drive wheel is controlled. When slip suppression control is carried out to decrease a driving torque of a drive source that is connected to the drive wheel of a vehicle via a speed reduction mechanism and a drive shaft, and is configured to generate a torque for braking or driving the drive wheel, to thereby suppress a slip state of the drive wheel, the driving torque of the drive source is controlled so that a slip ratio of the drive wheel is in an area of the slip ratio smaller than a slip ratio corresponding to a peak value of a road surface friction coefficient in a characteristic of the road surface friction coefficient with respect to the slip ratio.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 4, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke SUZUKI, Hitoshi KOBAYASHI, Tatsuyuki YAMAMOTO
  • Publication number: 20160200324
    Abstract: Provided is an electric vehicle control system capable of securing good response and slip stopping property with respect to changes in a road surface condition. The system includes a vehicle controller configured to calculate a driver's demand torque command value according to a driver's accelerating or braking operation, a first communication device capable of communicating between a hydraulic controller and a motor controller, and a second communication device capable of communicating between the vehicle controller and the motor controller. The system includes a control system in which the hydraulic controller transmits a motor torque command value to the motor controller through the first communication device; the vehicle controller transmits the driver's demand torque command value to the motor controller through the second communication device; and the motor controller selects either one of the received motor torque command value and the received driver's demand torque command value as the command value.
    Type: Application
    Filed: August 8, 2014
    Publication date: July 14, 2016
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Keisuke SUZUKI, Hitoshi KOBAYASHI, Tatsuyuki YAMAMOTO
  • Publication number: 20160085179
    Abstract: An image forming apparatus includes: a bottle which is detachably mounted on an apparatus body to store toner; a shutter which is disposed on the bottle to open and close a discharge port which discharges the toner; and a shutter slider which is disposed in the apparatus body to open and close the shutter by engaging therewith along with an insertion operation of the bottle. The shutter slider is disposed to be movable from a first position, which allows the shutter to be located at a closed position at which the discharge port is closed by the shutter when the bottle is mounted on the apparatus body, to a second position, in which the discharge port is to be opened and closed by the shutter along with an operation of attaching and detaching the bottle to and from the apparatus body.
    Type: Application
    Filed: December 1, 2015
    Publication date: March 24, 2016
    Inventors: Tatsuyuki Yamamoto, Takao Nakajima
  • Patent number: 9244382
    Abstract: An image forming apparatus includes: a bottle which is detachably mounted on an apparatus body to store toner; a shutter which is disposed on the bottle to open and close a discharge port which discharges the toner; and a shutter slider which is disposed in the apparatus body to open and close the shutter by engaging therewith along with an insertion operation of the bottle. The shutter slider is disposed to be movable from a first position, which allows the shutter to be located at a closed position at which the discharge port is closed by the shutter when the bottle is mounted on the apparatus body, to a second position, in which the discharge port is to be opened and closed by the shutter along with an operation of attaching and detaching the bottle to and from the apparatus body.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: January 26, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuyuki Yamamoto, Takao Nakajima
  • Patent number: 9229422
    Abstract: A developer receiving apparatus includes a receiving portion displacably provided and configured to receive developer supplied from a supply container. The receiving portion including a receiving port configured to receive the developer and a first engaging portion engageable with the supply container to displace the receiving portion toward the supply container so as to connect the receiving portion with the supply container in a mounting operation. A covering member is displaceably provided in the receiving apparatus and covers an upper part of the receiving port. The covering member takes a closing position closing the upper part of the receiving port when the supply container is not mounted, and includes a second engaging portion engageable with the receiving portion to displace the covering member to a retracted position retracted from the closing position to permit the receiving portion to connect with the supply container in the mounting operation.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: January 5, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tatsuyuki Yamamoto
  • Publication number: 20150375783
    Abstract: A motor power unit (9) is installed in a motor room (1). The motor power unit (9) is produced by integrally joining a motor (11) and a speed reduction gear unit (12) using, as a joining surface, one end surface of a motor case (11a) where a rotation shaft is provided, the speed reduction gear unit (12) including a speed reduction gear case (12a) in which a differential gear is installed together with a speed reduction gear. The motor (11) is placed above the differential gear installed in the speed reduction gear case (12a). The rotation shaft of the motor (11) is placed at the more front side of a vehicle body than a rotation center of the differential gear. With such arrangement, the length of the motor power unit (9) in a vehicle body longitudinal direction can be reduced.
    Type: Application
    Filed: March 17, 2014
    Publication date: December 31, 2015
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tatsuyuki YAMAMOTO, Akira TAKAHASHI