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).

  • Publication number: 20230407598
    Abstract: A work vehicle includes a power source, a travel device that includes a clutch capable of adjusting a degree of engagement between the power source and a transmission, and travels on a basis of power transmitted from the power source, working equipment, a drive device that operates the working equipment on a basis of power transmitted from the power source, and a control device that outputs a control command for controlling the degree of engagement of the clutch on a basis of a state of the working equipment.
    Type: Application
    Filed: November 1, 2021
    Publication date: December 21, 2023
    Applicant: Komatsu Ltd.
    Inventors: Kazuki Ichikawa, Masaaki Imaizumi, Ken Hirabayashi, Kento Niiyama
  • Patent number: 11663891
    Abstract: A work vehicle periphery monitoring system includes: an alarm range storage unit that stores an alarm range, in which an alarm output is required when an object is present, in a detection range of an object detection device that detects an object present in a periphery of a work vehicle; a work mode determination unit that determines a work mode of the work vehicle; an alarm range changing unit that changes the alarm range in the detection range when it is determined that the work mode is a specific work mode; and an alarm control unit that causes an alarm device to output an alarm when an object is present in the alarm range.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: May 30, 2023
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Patent number: 11657688
    Abstract: A work vehicle periphery monitoring system includes: an alarm range storage unit that stores an alarm range, in which an alarm output is required when an object is present, in a detection range of an object detection device that detects an object present in a periphery of a work vehicle; a work mode determination unit that determines a work mode of the work vehicle; an alarm range changing unit that changes the alarm range in the detection range when it is determined that the work mode is a specific work mode; and an alarm control unit that causes an alarm device to output an alarm when an object is present in the alarm range.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: May 23, 2023
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Patent number: 11562635
    Abstract: A work vehicle periphery monitoring system includes: an alarm range storage unit that stores an alarm range, in which an alarm output is required when an object is present, in a detection range of an object detection device that detects an object present in a periphery of a work vehicle; a work mode determination unit that determines a work mode of the work vehicle; an alarm range changing unit that changes the alarm range in the detection range when it is determined that the work mode is a specific work mode; and an alarm control unit that causes an alarm device to output an alarm when an object is present in the alarm range.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: January 24, 2023
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Publication number: 20220327900
    Abstract: A work vehicle periphery monitoring system includes: an alarm range storage unit that stores an alarm range, in which an alarm output is required when an object is present, in a detection range of an object detection device that detects an object present in a periphery of a work vehicle; a work mode determination unit that determines a work mode of the work vehicle; an alarm range changing unit that changes the alarm range in the detection range when it is determined that the work mode is a specific work mode; and an alarm control unit that causes an alarm device to output an alarm when an object is present in the alarm range.
    Type: Application
    Filed: June 28, 2022
    Publication date: October 13, 2022
    Applicant: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Publication number: 20220327901
    Abstract: A work vehicle periphery monitoring system includes: an alarm range storage unit that stores an alarm range, in which an alarm output is required when an object is present, in a detection range of an object detection device that detects an object present in a periphery of a work vehicle; a work mode determination unit that determines a work mode of the work vehicle; an alarm range changing unit that changes the alarm range in the detection range when it is determined that the work mode is a specific work mode; and an alarm control unit that causes an alarm device to output an alarm when an object is present in the alarm range.
    Type: Application
    Filed: June 28, 2022
    Publication date: October 13, 2022
    Applicant: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Patent number: 11391308
    Abstract: A work vehicle includes: a hydraulic pump driven by an engine; a hydraulic actuator that is driven by hydraulic oil supplied from the hydraulic pump; a switching valve configured to switch from one to the other of a first state in which the hydraulic oil supplied from the hydraulic pump is supplied to a first channel and a second state in which the hydraulic oil supplied from the hydraulic pump is supplied to a second channel; a restriction operation device configured to generate an operation signal that restricts the drive of the hydraulic actuator; and a controller that controls the switching valve. The controller includes: an operation signal acquisition unit configured to acquire the operation signal; and an instruction output unit configured to output, to the switching valve, a control instruction that restricts the drive of the hydraulic actuator with the engine driving, in response to the operation signal.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: July 19, 2022
    Assignee: Komatsu Ltd.
    Inventors: Yushi Tanaka, Ryosuke Maeda, Masaaki Imaizumi
  • Patent number: 11280063
    Abstract: A work vehicle control system includes: a hydraulic device configured to adjust a supply state of hydraulic fluid supplied to a hydraulic cylinder configured to cause a work tool to operate; and a control device configured to control the hydraulic device. The control device includes: an operation data acquisition unit configured to acquire operation data indicating an operation state of an operating device operated in order to cause a work tool to perform dumping and tilting movements; and a control command unit configured to output, based on the operation data, a control command to control the hydraulic device; an operating condition determination unit configured to determine, based on the operation data, whether the operating device is operated under prescribed operating conditions; and a limit command unit configured to output a limit command to limit the control command when the operating device is determined to be operated under the operating conditions.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 22, 2022
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Makoto Naito
  • Publication number: 20210350681
    Abstract: A work vehicle periphery monitoring system includes: an alarm range storage unit that stores an alarm range, in which an alarm output is required when an object is present, in a detection range of an object detection device that detects an object present in a periphery of a work vehicle; a work mode determination unit that determines a work mode of the work vehicle; an alarm range changing unit that changes the alarm range in the detection range when it is determined that the work mode is a specific work mode; and an alarm control unit that causes an alarm device to output an alarm when an object is present in the alarm range.
    Type: Application
    Filed: July 12, 2019
    Publication date: November 11, 2021
    Applicant: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Publication number: 20210222401
    Abstract: A work vehicle control system includes: a hydraulic device configured to adjust a supply state of hydraulic fluid supplied to a hydraulic cylinder configured to cause a work tool to operate; and a control device configured to control the hydraulic device. The control device includes: an operation data acquisition unit configured to acquire operation data indicating an operation state of an operating device operated in order to cause a work tool to perform dumping and tilting movements; and a control command unit configured to output, based on the operation data, a control command to control the hydraulic device; an operating condition determination unit configured to determine, based on the operation data, whether the operating device is operated under prescribed operating conditions; and a limit command unit configured to output a limit command to limit the control command when the operating device is determined to be operated under the operating conditions.
    Type: Application
    Filed: June 19, 2018
    Publication date: July 22, 2021
    Inventors: Masaaki Imaizumi, Makoto Naito
  • Publication number: 20210180623
    Abstract: A work vehicle includes: a hydraulic pump driven by an engine; a hydraulic actuator that is driven by hydraulic oil supplied from the hydraulic pump; a switching valve configured to switch from one to the other of a first state in which the hydraulic oil supplied from the hydraulic pump is supplied to a first channel and a second state in which the hydraulic oil supplied from the hydraulic pump is supplied to a second channel; a restriction operation device configured to generate an operation signal that restricts the drive of the hydraulic actuator; and a controller that controls the switching valve. The controller includes: an operation signal acquisition unit configured to acquire the operation signal; and an instruction output unit configured to output, to the switching valve, a control instruction that restricts the drive of the hydraulic actuator with the engine driving, in response to the operation signal.
    Type: Application
    Filed: April 11, 2018
    Publication date: June 17, 2021
    Inventors: Yushi Tanaka, Ryosuke Maeda, Masaaki Imaizumi
  • Patent number: 10876270
    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: Grant
    Filed: March 24, 2016
    Date of Patent: December 29, 2020
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Yuu Sakon, Yuuji Fukuda
  • Patent number: 10668854
    Abstract: A work vehicle includes a vehicle body, a working implement, a camera, and a display control unit. To the vehicle body, front tires are mounted. The working implement is movably coupled to the vehicle body and at least a part thereof is arranged anterior to the front tires. The camera is arranged at a front portion of the vehicle body and shoots an image of an anterior area outside the vehicle body as a shooting area. The display control unit causes a display device to display a shot image shot by the camera and a first guide image which indicates a first projection position obtained by projecting a first site of the working implement on a plane including ground-contacting surfaces of the front tires in a superimposed manner.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: June 2, 2020
    Assignee: KOMATSU LTD.
    Inventors: Masaaki Imaizumi, Takeshi Kurihara, Masataka Ozaki
  • Patent number: 10590629
    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: Grant
    Filed: March 29, 2016
    Date of Patent: March 17, 2020
    Assignee: KOMATSU LTD.
    Inventors: Masaaki Imaizumi, Isamu Satou
  • Patent number: 10545042
    Abstract: A fuel consumption measurement system of a work vehicle includes a first fuel data calculation unit configured to calculate first fuel data related to fuel consumption, based on a fuel injection amount injected to an engine, a second fuel data calculation unit configured to calculate second fuel data related to fuel consumption, based on a change amount of a fuel amount in a fuel tank, a correction coefficient calculation unit configured to calculate a correction coefficient based on the first fuel data and the second fuel data, a correction coefficient determination unit configured to determine whether the correction coefficient falls within a prescribed range, a fuel consumption data calculation unit configured to calculate fuel consumption data indicating a fuel consumption rate, based on the correction coefficient determined to fall within the prescribed range, and the first fuel data, and an output unit configured to output the fuel consumption data.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: January 28, 2020
    Assignee: Komatsu Ltd.
    Inventor: Masaaki Imaizumi
  • Publication number: 20190390993
    Abstract: A fuel consumption measurement system of a work vehicle includes a first fuel data calculation unit configured to calculate first fuel data related to fuel consumption, based on a fuel injection amount injected to an engine, a second fuel data calculation unit configured to calculate second fuel data related to fuel consumption, based on a change amount of a fuel amount in a fuel tank, a correction coefficient calculation unit configured to calculate a correction coefficient based on the first fuel data and the second fuel data, a correction coefficient determination unit configured to determine whether the correction coefficient falls within a prescribed range, a fuel consumption data calculation unit configured to calculate fuel consumption data indicating a fuel consumption rate, based on the correction coefficient determined to fall within the prescribed range, and the first fuel data, and an output unit configured to output the fuel consumption data.
    Type: Application
    Filed: June 25, 2018
    Publication date: December 26, 2019
    Inventor: Masaaki Imaizumi
  • Patent number: 10442442
    Abstract: A periphery monitoring system includes an operation instruction output unit which outputs an operation instruction to a warning device provided in a work vehicle based on detection data of an object detection device detecting an object in a periphery of the work vehicle, an invalidating unit which invalidates the operation instruction based on an invalidating instruction output from a cancel operation device provided in a driving room of the work vehicle, and a validating unit which validates the invalidated operation instruction based on detection data of a boarding state detection device detecting a specific boarding state of a passenger in the driving room.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: October 15, 2019
    Assignee: Komatsu LTD.
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Patent number: 10421400
    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: Grant
    Filed: February 9, 2017
    Date of Patent: September 24, 2019
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Takeshi Kurihara, Masataka Ozaki
  • Publication number: 20190168776
    Abstract: A periphery monitoring system includes an operation instruction output unit which outputs an operation instruction to a warning device provided in a work vehicle based on detection data of an object detection device detecting an object in a periphery of the work vehicle, an invalidating unit which invalidates the operation instruction based on an invalidating instruction output from a cancel operation device provided in a driving room of the work vehicle, and a validating unit which validates the invalidated operation instruction based on detection data of a boarding state detection device detecting a specific boarding state of a passenger in the driving room.
    Type: Application
    Filed: December 6, 2017
    Publication date: June 6, 2019
    Inventors: Masaaki Imaizumi, Masataka Ozaki, Takeshi Kurihara
  • Publication number: 20180370432
    Abstract: A work vehicle includes a vehicle body, a working implement, a camera, and a display control unit. To the vehicle body, front tires are mounted. The working implement is movably coupled to the vehicle body and at least a part thereof is arranged anterior to the front tires. The camera is arranged at a front portion of the vehicle body and shoots an image of an anterior area outside the vehicle body as a shooting area. The display control unit causes a display device to display a shot image shot by the camera and a first guide image which indicates a first projection position obtained by projecting a first site of the working implement on a plane including ground-contacting surfaces of the front tires in a superimposed manner.
    Type: Application
    Filed: February 9, 2017
    Publication date: December 27, 2018
    Inventors: Masaaki Imaizumi, Takeshi Kurihara, Masataka Ozaki