Patents by Inventor Masaaki Imaizumi

Masaaki Imaizumi 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: 10047495
    Abstract: A loader control system includes: a boom position calculation unit configured to calculate a position of a boom rotatably supported by a vehicle body of a loader; a bucket attitude calculation unit configured to calculate an attitude of a bucket rotatably supported by the boom; a determination unit configured to determine whether the attitude satisfies a predetermined condition on the basis of the attitude and a reference attitude of the bucket in dumping movement; and a work machine control unit configured to cause the bucket to carry out the dumping movement, and output a control signal to cause the boom to carry out lifting movement when the attitude is determined to satisfy the predetermined condition.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: August 14, 2018
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Ken Hirabayashi, Satoshi Kousuge
  • Publication number: 20180222390
    Abstract: A surroundings monitoring system for a work vehicle includes a bending angle data acquirer acquiring bending angle data between a vehicle body front and rear portions, and a shot image data acquirer acquiring shot images respectively shot by multiple cameras, and a bird's eye image compositor performing image processing of a plurality of the shot image data to generate a bird's eye image, and a storage storing representative images of the work vehicle respectively belong to multiple bending angle ranges between the vehicle body front and rear portions, and a determiner determining, from the multiple bending angle ranges, a bending angle range to which the bending angle belongs, and a selector selecting, from a plurality of the representative images, a representative image that belongs to the determined bending angle range, and a display controller causing a display to simultaneously display the generated bird's eye image and the selected representative image.
    Type: Application
    Filed: February 9, 2017
    Publication date: August 9, 2018
    Applicant: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Takeshi Kurihara, Masataka Ozaki
  • Publication number: 20180119384
    Abstract: A loader control system includes: a boom position calculation unit configured to calculate a position of a boom rotatably supported by a vehicle body of a loader; a bucket attitude calculation unit configured to calculate an attitude of a bucket rotatably supported by the boom; a determination unit configured to determine whether the attitude satisfies a predetermined condition on the basis of the attitude and a reference attitude of the bucket in dumping movement; and a work machine control unit configured to cause the bucket to carry out the dumping movement, and output a control signal to cause the boom to carry out lifting movement when the attitude is determined to satisfy the predetermined condition.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 3, 2018
    Inventors: Masaaki Imaizumi, Ken Hirabayashi, Satoshi Kousuge
  • Patent number: 9809948
    Abstract: In controlling a work vehicle including a boom supported by a vehicle body and configured to turn, and a bucket supported by a side, away from the vehicle body, of the boom and configured to turn according to an operation of an actuator, an operation amount for raising the boom or a rising speed of the boom, and an operable amount that the actuator is able to operate before the bucket reaches a stop position on the dump side based on the posture of the boom and the posture of the bucket, are obtained, and an operation amount of the actuator for causing the bucket to tilt is changed based on the operation amount for raising the boom or the rising speed of the boom to thereby cause the bucket to tilt according to the operable amount.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: November 7, 2017
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Minoru Wada, Yoshiaki Saito
  • Publication number: 20170298591
    Abstract: A wheel loader includes: an operating state detecting unit detecting an operating state; a target setting unit setting a relationship between a target position of a working equipment and a travel distance of the wheel loader for the operating state detected by the operating state detecting unit; a travel distance detecting unit detecting the travel distance of the wheel loader; and a working equipment controlling unit moving a boom and a bucket to the target position of the working equipment determined depending on the travel distance detected by the travel distance detecting unit.
    Type: Application
    Filed: March 24, 2016
    Publication date: October 19, 2017
    Applicant: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Yuu Sakon, Yuuji Fukuda
  • Publication number: 20170284066
    Abstract: A working vehicle includes a vehicle main body to which a tire is mounted, an excavation member coupled to the vehicle main body on a front side of the vehicle main body and that includes an end part arranged on an outer side of the tire in a vehicle-width direction of the vehicle main body, a hydraulic cylinder arranged at a center part in the vehicle-width direction and that is to move the excavation member, a housing that houses a power transmission mechanism to transmit power to the tire, and a camera supported by a part of the vehicle main body on a lower side of the hydraulic cylinder and on an upper side of the housing and that acquires an image of a region that includes end parts on both sides of the excavation member and that is between the excavation member and the tire.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 5, 2017
    Inventors: Masaaki Imaizumi, Isamu Satou
  • Patent number: 9702117
    Abstract: In controlling a work vehicle including a boom supported by a vehicle body and configured to turn, and a bucket supported by a side, away from the vehicle body, of the boom and configured to turn according to an operation of an actuator, an operation amount for raising the boom or a rising speed of the boom, and an operable amount that the actuator is able to operate before the bucket reaches the stopper based on the posture of the boom and the posture of the bucket, are obtained, and an operating speed of the actuator is limited according to the operable amount of the actuator before the bucket reaches the stopper, and based on the operation amount for raising the boom or the rising speed of the boom obtained, a limit amount of the operating speed of the actuator is changed.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: July 11, 2017
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Minoru Wada, Yoshiaki Saito
  • Patent number: 9469973
    Abstract: A wheel loader includes detectors and a controller. The detectors include at least an accelerator pedal angle detector that detects an accelerator displacement. The controller includes: a state judging unit that judges from a detection result provided by the detectors whether or not the wheel loader is in an excavation operation; and a torque-curve selector. The torque-curve selector selects one excavation torque curve when the wheel loader is judged to be in the excavation operation by the state judging unit, and selects one of two or more non-excavation torque curves depending on the accelerator displacement when the wheel loader is judged not to be in the excavation operation.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: October 18, 2016
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Minoru Wada
  • Publication number: 20160281323
    Abstract: A wheel loader includes: an operating state detecting unit detecting an operating state; a target setting unit setting a relationship between a target position of a working equipment and a travel distance of the wheel loader for the operating state detected by the operating state detecting unit; a travel distance detecting unit detecting the travel distance of the wheel loader; and a working equipment controlling unit moving a boom and a bucket to the target position of the working equipment determined depending on the travel distance detected by the travel distance detecting unit.
    Type: Application
    Filed: March 25, 2015
    Publication date: September 29, 2016
    Inventor: Masaaki Imaizumi
  • Publication number: 20160265185
    Abstract: In controlling a work vehicle including a boom supported by a vehicle body and configured to turn, and a bucket supported by a side, away from the vehicle body, of the boom and configured to turn according to an operation of an actuator, an operation amount for raising the boom or a rising speed of the boom, and an operable amount that the actuator is able to operate before the bucket reaches a stop position on the dump side based on the posture of the boom and the posture of the bucket, are obtained, and an operation amount of the actuator for causing the bucket to tilt is changed based on the operation amount for raising the boom or the rising speed of the boom to thereby cause the bucket to tilt according to the operable amount.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 15, 2016
    Inventors: Masaaki Imaizumi, Minoru Wada, Yoshiaki Saito
  • Patent number: 9441346
    Abstract: A work vehicle includes: a body; a boom which is supported by the body and is turned; a bucket which is supported by a side of the boom opposite to a side of the body and is turned; a boom driving part which turns the boom; a bucket driving part which turns the bucket; a lifting force detector which detects lifting force as force that the boom driving part receives from the boom; and a control device which starts a tilt operation of the bucket when a predetermined condition is established, and ends the tilt operation on the basis of an amount of increase of the lifting force from a time when the tilt operation is started.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: September 13, 2016
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Minoru Wada
  • Publication number: 20160251829
    Abstract: In controlling a work vehicle including a boom supported by a vehicle body and configured to turn, and a bucket supported by a side, away from the vehicle body, of the boom and configured to turn according to an operation of an actuator, an operation amount for raising the boom or a rising speed of the boom, and an operable amount that the actuator is able to operate before the bucket reaches the stopper based on the posture of the boom and the posture of the bucket, are obtained, and an operating speed of the actuator is limited according to the operable amount of the actuator before the bucket reaches the stopper, and based on the operation amount for raising the boom or the rising speed of the boom obtained, a limit amount of the operating speed of the actuator is changed.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 1, 2016
    Inventors: Masaaki Imaizumi, Minoru Wada, Yoshiaki Saito
  • Publication number: 20160040391
    Abstract: A work vehicle includes: a body; a boom which is supported by the body and is turned; a bucket which is supported by a side of the boom opposite to a side of the body and is turned; a boom driving part which turns the boom; a bucket driving part which turns the bucket; a lifting force detector which detects lifting force as force that the boom driving part receives from the boom; and a control device which starts a tilt operation of the bucket when a predetermined condition is established, and ends the tilt operation on the basis of an amount of increase of the lifting force from a time when the tilt operation is started.
    Type: Application
    Filed: July 12, 2013
    Publication date: February 11, 2016
    Applicant: KOMATSU LTD.
    Inventors: Masaaki Imaizumi, Minoru Wada
  • Publication number: 20150204053
    Abstract: A wheel loader includes detectors and a controller. The detectors include at least an accelerator pedal angle detector that detects an accelerator displacement. The controller includes: a state judging unit that judges from a detection result provided by the detectors whether or not the wheel loader is in an excavation operation; and a torque-curve selector. The torque-curve selector selects one excavation torque curve when the wheel loader is judged to be in the excavation operation by the state judging unit, and selects one of two or more non-excavation torque curves depending on the accelerator displacement when the wheel loader is judged not to be in the excavation operation.
    Type: Application
    Filed: May 29, 2013
    Publication date: July 23, 2015
    Applicant: KOMATSU LTD.
    Inventors: Masaaki Imaizumi, Minoru Wada
  • Patent number: 8908946
    Abstract: In order to provide a technology which allows efficient understanding of images of a disease locus and diagnosis supporting information for the images, an information processing apparatus comprises: an input unit which inputs object identification information for identifying an object; an acquiring unit which acquires one or more schemas related to the object and medical image data related to the schema, an identification unit which identifies a disease locus region in medical image data respectively related to each of the one or more schemas, a time-series schema generating unit which generates a time-series schema of the disease locus, a time-series image data generating unit which generates time-series image data of the disease locus, and a display output unit which synchronizes and outputs the time-series schema of the disease locus and the time-series image data of the disease locus.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: December 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Miyasa, Hiroshi Imamura, Masaaki Imaizumi, Yukio Sakagawa
  • Patent number: 8632314
    Abstract: The invention reduces waste of flow volume of pressurized oil discharged from a hydraulic pump when the rotational speed of a cooling fan is increased to the target rotational speed. The target rotational speed of the cooling fan is set at a target rotational speed setting portion. An acceleration pattern for increasing the cooling fan to the target rotational speed is set at an acceleration pattern setting portion based on the rotational speed of the cooling fan, the target rotational speed set at the target rotational speed setting portion, and magnitude of force due to inertia of the cooling fan and the hydraulic motor. The rotational speed command value calculation portion controls the pressurized oil to be supplied to the hydraulic motor at a flow rate required. Thus, it is possible to reduce wasted relief flow volume.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: January 21, 2014
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Minoru Wada
  • Patent number: 8459959
    Abstract: Disclosed is a control device of a hydraulically driven fan. The control device of a hydraulically driven fan is characterized by comprising first command value calculation means for calculating a fan speed command by a proportional term only while a difference between a target valve controlled variable and an actual valve controlled variable is not smaller than a predetermined threshold, second command value calculation means for calculating a fan speed command by the proportional term and an integral term while a difference between a target valve controlled variable and an actual valve controlled variable is smaller than a predetermined threshold, target valve controlled variable calculation means for calculating a target valve controlled variable of a control valve based on the calculated fan speed command, and control means for outputting a valve controlled variable to a control valve such that the control valve reaches the target valve controlled variable.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: June 11, 2013
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Katsuhiro Ikegami, Yosahitaka Onodera
  • Patent number: 8331640
    Abstract: In order to provide a technology which allows efficient understanding of images of a disease locus and diagnosis supporting information for the images, an information processing apparatus comprises: an input unit which inputs object identification information for identifying an object; an acquiring unit which acquires one or more schemas related to the object and medical image data related to the schema, an identification unit which identifies a disease locus region in medical image data respectively related to each of the one or more schemas, a time-series schema generating unit which generates a time-series schema of the disease locus, a time-series image data generating unit which generates time-series image data of the disease locus, and a display output unit which synchronizes and outputs the time-series schema of the disease locus and the time-series image data of the disease locus.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 11, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Miyasa, Hiroshi Imamura, Masaaki Imaizumi, Yukio Sakagawa
  • Patent number: 8115814
    Abstract: An apparatus and method to track and to photograph a mobile object over a wide range, by a cooperative operation of multiple cameras. In addition, a mobile tracking system is provided for tracking the mobile object by the cooperation of multiple cameras, in which each camera includes a photographing device which photographs and recognizes the mobile object, a changing device which changes a view angle of the photographing device, a position deriving device which derives a position of the camera, a distance deriving device which derives the distance between the camera and the mobile object, and a communication device which transmits an identifier of the camera, a position of the camera, a moving direction of the mobile object and the distance between the camera and the mobile object to another camera and receives an identifier of the other camera, a position of the other camera, a moving direction of the mobile object and a distance between the other camera and the mobile object from the other camera.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: February 14, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihiko Iwase, Masaaki Imaizumi
  • Publication number: 20110293439
    Abstract: The invention reduces waste of flow volume of pressurized oil discharged from a hydraulic pump when the rotational speed of a cooling fan is increased to the target rotational speed. The target rotational speed of the cooling fan is set at a target rotational speed setting portion. An acceleration pattern for increasing the cooling fan to the target rotational speed is set at an acceleration pattern setting portion based on the rotational speed of the cooling fan, the target rotational speed set at the target rotational speed setting portion, and magnitude of force due to inertia of the cooling fan and the hydraulic motor. The rotational speed command value calculation portion controls the pressurized oil to be supplied to the hydraulic motor at a flow rate required. Thus, it is possible to reduce wasted relief flow volume.
    Type: Application
    Filed: March 10, 2010
    Publication date: December 1, 2011
    Applicant: KOMATSU LTD.
    Inventors: Masaaki Imaizumi, Minoru Wada