Patents by Inventor Kazushige KUROKAMI

Kazushige KUROKAMI 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: 11447934
    Abstract: The line-of-sight direction of an operator is estimated on the basis of the posture of a front work device detected by a posture sensor, and plural display regions are set on a screen of a transparent display on the basis of the estimated line-of-sight direction of the operator. Then, the display position of a display image is calculated in such a manner that the display position is located in the display region corresponding to the kind of the display image in the set plural display regions.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: September 20, 2022
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Kazushige Kurokami, Shigeki Tokita, Hiroshi Sakamoto
  • Patent number: 11401696
    Abstract: An operator of a hydraulic excavator and a worker working outside of the hydraulic excavator carry a worker tag that sends a radio-wave signal including a magnetic field ID, a tag ID, and positional information obtained by a GNSS receiving section in case the worker tag receives a magnetic field signal generated by a magnetic field detecting device mounted on the hydraulic excavator. Based on positional information of the hydraulic excavator that is obtained from an GNSS receiving device and positional information of the worker tag, the position of the worker tag is calculated. In case the worker tag is detected in a proximity notification target area, a notification command is generated for notifying the operator of the hydraulic excavator of the detection of the worker tag, and output to a notification device in the cabin of the hydraulic excavator. Thus, a worker who is in proximity to the work machine is accurately detected, and the operator is prevented from being excessively alerted.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: August 2, 2022
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Mariko Mizuochi, Hiroshi Sakamoto, Kazushige Kurokami
  • Publication number: 20220049476
    Abstract: The line-of-sight direction of an operator is estimated on the basis of the posture of a front work device detected by a posture sensor, and plural display regions are set on a screen of a transparent display on the basis of the estimated line-of-sight direction of the operator. Then, the display position of a display image is calculated in such a manner that the display position is located in the display region corresponding to the kind of the display image in the set plural display regions.
    Type: Application
    Filed: February 4, 2020
    Publication date: February 17, 2022
    Inventors: Kazushige KUROKAMI, Shigeki TOKITA, Hiroshi SAKAMOTO
  • Patent number: 11225777
    Abstract: A mode selecting device configured to select a work mode of a hydraulic excavator, a work determining section configured to determine whether work contents of the hydraulic excavator are work contents other than those of the selected work mode on the basis of a detection result of pilot pressure sensors, a minimum alarm region determining section configured to determine one of a plurality of minimum alarm regions preset on the periphery of the hydraulic excavator on the basis of a selection result of the mode selecting device and a determination result of the work determining section, and an alarm determining section configured to output an alarm signal to a buzzer when the relative position of an obstacle, the relative position being computed by an obstacle position calculating section, is inside an alarm region set so as to include the minimum alarm region determined by the minimum alarm region determining section.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: January 18, 2022
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Kazushige Kurokami, Hiroshi Sakamoto, Shigeki Tokita
  • Publication number: 20200277757
    Abstract: A mode selecting device configured to select a work mode of a hydraulic excavator, a work determining section configured to determine whether work contents of the hydraulic excavator are work contents other than those of the selected work mode on the basis of a detection result of pilot pressure sensors, a minimum alarm region determining section configured to determine one of a plurality of minimum alarm regions preset on the periphery of the hydraulic excavator on the basis of a selection result of the mode selecting device and a determination result of the work determining section, and an alarm determining section configured to output an alarm signal to a buzzer when the relative position of an obstacle, the relative position being computed by an obstacle position calculating section, is inside an alarm region set so as to include the minimum alarm region determined by the minimum alarm region determining section.
    Type: Application
    Filed: March 14, 2018
    Publication date: September 3, 2020
    Inventors: Kazushige KUROKAMI, Hiroshi SAKAMOTO, Shigeki TOKITA
  • Publication number: 20200217049
    Abstract: An operator of a hydraulic excavator and a worker working outside of the hydraulic excavator carry a worker tag that sends a radio-wave signal including a magnetic field ID, a tag ID, and positional information obtained by a GNSS receiving section in case the worker tag receives a magnetic field signal generated by a magnetic field detecting device mounted on the hydraulic excavator. Based on positional information of the hydraulic excavator that is obtained from an GNSS receiving device and positional information of the worker tag, the position of the worker tag is calculated. In case the worker tag is detected in a proximity notification target area, a notification command is generated for notifying the operator of the hydraulic excavator of the detection of the worker tag, and output to a notification device in the cabin of the hydraulic excavator. Thus, a worker who is in proximity to the work machine is accurately detected, and the operator is prevented from being excessively alerted.
    Type: Application
    Filed: December 13, 2018
    Publication date: July 9, 2020
    Inventors: Mariko MIZUOCHI, Hiroshi SAKAMOTO, Kazushige KUROKAMI
  • Patent number: 10570587
    Abstract: Provided is a controller (50) that includes a mechanical state acquisition section (400) that acquires information regarding a posture and an operation of a hydraulic excavator; a blind angle calculation section (500) that calculates a blind angle area from a seat in a cab (1f) of the hydraulic excavator based on the information indicating the posture and the operation of the hydraulic excavator and acquired by the mechanical state acquisition section (400); and a visibility level determination section (300) that determines a visibility level of an obstacle based on the blind angle area calculated by the blind angle calculation section (500) and a positional relationship calculated by a position relation calculation section (200). Further, a warning level determination section (600) of the controller (50) adjusts a warning level in accordance with the visibility level determined by the visibility level determination section (300).
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: February 25, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Kazushige Kurokami, Hiroshi Sakamoto, Mariko Mizuochi
  • Publication number: 20190352885
    Abstract: Provided is a controller (50) that includes a mechanical state acquisition section (400) that acquires information regarding a posture and an operation of a hydraulic excavator; a blind angle calculation section (500) that calculates a blind angle area from a seat in a cab (1f) of the hydraulic excavator based on the information indicating the posture and the operation of the hydraulic excavator and acquired by the mechanical state acquisition section (400); and a visibility level determination section (300) that determines a visibility level of an obstacle based on the blind angle area calculated by the blind angle calculation section (500) and a positional relationship calculated by a position relation calculation section (200). Further, a warning level determination section (600) of the controller (50) adjusts a warning level in accordance with the visibility level determined by the visibility level determination section (300).
    Type: Application
    Filed: November 2, 2017
    Publication date: November 21, 2019
    Inventors: Kazushige KUROKAMI, Hiroshi SAKAMOTO, Mariko MIZUOCHI
  • Publication number: 20190211532
    Abstract: A construction machine includes: a guidance apparatus having a guidance display section for displaying a target surface for an object to be worked on by a work implement based on predetermined design data with respect to the object to be worked on by the work implement and positional information of the work implement and displaying the positional information of the work implement on a guidance monitor in a cabin of the construction machine; and an obstacle detecting apparatus having an obstacle position acquisition section for acquiring positional information of an obstacle detected around the construction machine. The guidance display section of the guidance apparatus displays the positional information of the obstacle acquired by the obstacle position acquisition section of the obstacle detecting apparatus on the guidance monitor. Thus, while viewing the screen of the guidance apparatus, it is possible to present the operator reliably with real-time information of the obstacle.
    Type: Application
    Filed: September 7, 2017
    Publication date: July 11, 2019
    Inventors: Hiroshi SAKAMOTO, Kazushige KUROKAMI, Youhei TORIYAMA, Mariko MIZUOCHI