Patents by Inventor Toshiaki Kumagai

Toshiaki Kumagai 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: 20220049477
    Abstract: There is provided a system including a work machine, comprising a main body of the work machine, a work implement attached to the main body of the work machine, an operating member operated to operate the work implement, and a computer. The computer has a trained position estimation model for determining the position of a portion of the work implement that is a target of positional estimation. The computer obtains an operation command value causing the work implement to make a movement in response to an operation of the operating member, uses the trained position estimation model to estimate from the operation command value an amount of displacement of the target of positional estimation from a reference position, and outputs an estimated position that is a position of the target of positional estimation estimated from the reference position and the amount of displacement.
    Type: Application
    Filed: January 23, 2020
    Publication date: February 17, 2022
    Applicant: KOMATSU LTD.
    Inventors: Nobuyoshi YAMANAKA, Toshiaki KUMAGAI, Kensuke FUJII
  • Publication number: 20220013769
    Abstract: An anode active material for a non-aqueous electrolyte secondary battery, including: an aluminum phase; and a non-aluminum metal phase dispersed in the aluminum phase, in which the non-aluminum metal phase is formed of a non-aluminum metal compound containing one or more selected from the group consisting of Si, Ge, Sn, Ag, Sb, Bi, In, and Mg, and an amount of the non-aluminum metal phase with respect to a total amount of the aluminum phase and the non-aluminum metal phase is 0.01 mass % or more and 8 mass % or less.
    Type: Application
    Filed: October 17, 2019
    Publication date: January 13, 2022
    Inventors: Takitaro YAMAGUCHI, Hiroaki HOSHIKAWA, Toshiaki KUMAGAI
  • Patent number: 11168458
    Abstract: A work vehicle includes a work implement and a controller. The work implement includes a vehicular body that travels in excavation, a boom pivotable with respect to the vehicular body, and a bucket pivotable with respect to the boom. The controller calculates a direction of a cutting edge of the bucket, determines a direction of movement of the cutting edge by an excavation operation such that an excavation angle between the calculated direction of the cutting edge of the bucket and the direction of movement of the cutting edge by the excavation operation keeps a predetermined angle, and causes the work vehicle to perform the excavation operation in the direction of movement.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: November 9, 2021
    Assignee: KOMATSU LTD.
    Inventors: Minoru Shimizu, Nobuyoshi Yamanaka, Toshiaki Kumagai
  • Publication number: 20210002871
    Abstract: A work implement's position is determined. Provided is a system including a work machine, the system comprising: a work machine body; a work implement attached to the work machine body; an imaging device that captures an image of the work implement; and a computer. The computer includes a trained position estimation model. The computer is programmed to obtain the image of the work implement captured by the imaging device and use the trained position estimation model to obtain a position of the work implement estimated from the captured image.
    Type: Application
    Filed: March 19, 2019
    Publication date: January 7, 2021
    Applicant: KOMATSU LTD.
    Inventors: Nobuyoshi YAMANAKA, Toshiaki KUMAGAI, Kensuke FUJII
  • Publication number: 20200407952
    Abstract: There is provided a hydraulic excavator allowing a simple configuration to be employed to determine a posture of a work implement accurately. The work implement and an imaging device are attached to a revolving unit. The work implement operates on a prescribed operating plane. The imaging device captures an image of the work implement at an angle larger than 0° with respect to the operating plane. The controller determines a position of the work implement relative to the revolving unit based on a posture of the work implement in the image captured by the imaging device.
    Type: Application
    Filed: March 19, 2019
    Publication date: December 31, 2020
    Applicant: KOMATSU LTD.
    Inventors: Nobuyoshi YAMANAKA, Toshiaki KUMAGAI, Kensuke FUJII
  • Publication number: 20200040548
    Abstract: A work vehicle includes a work implement and a controller. The work implement includes a vehicular body that travels in excavation, a boom pivotable with respect to the vehicular body, and a bucket pivotable with respect to the boom. The controller calculates a direction of a cutting edge of the bucket, determines a direction of movement of the cutting edge by an excavation operation such that an excavation angle between the calculated direction of the cutting edge of the bucket and the direction of movement of the cutting edge by the excavation operation keeps a predetermined angle, and causes the work vehicle to perform the excavation operation in the direction of movement.
    Type: Application
    Filed: February 20, 2018
    Publication date: February 6, 2020
    Applicant: KOMATSU LTD.
    Inventors: Minoru SHIMIZU, Nobuyoshi YAMANAKA, Toshiaki KUMAGAI
  • Publication number: 20190338489
    Abstract: A work vehicle includes: a vehicular body; a work implement having a boom pivotable with respect to the vehicular body, an arm pivotable with respect to the boom, and a bucket pivotable with respect to the arm; and a controller configured to calculate an angle of the bucket with respect to the arm according to an operation command before start of excavation, and control the work implement such that the calculated angle becomes equal to a first angle.
    Type: Application
    Filed: February 20, 2018
    Publication date: November 7, 2019
    Applicant: KOMATSU LTD.
    Inventors: Nobuyoshi YAMANAKA, Toshiaki KUMAGAI
  • Publication number: 20190203443
    Abstract: A work vehicle includes a vehicular body, a work implement, and a controller. The work implement has a boom pivotable with respect to the vehicular body, a dipper stick pivotable with respect to the boom, and a bucket pivotable with respect to the dipper stick. The controller calculates a direction of a cutting edge of the bucket and determines a direction in which the cutting edge travels to the side of an open side of the bucket such that the calculated direction of the cutting edge of the bucket and the direction in which the cutting edge travels to the side on the open side of the bucket form an excavation angle of a predetermined angle, and the controller thus causes an operation of the work implement to be performed in the direction in which the cutting edge travels.
    Type: Application
    Filed: November 28, 2016
    Publication date: July 4, 2019
    Applicant: KOMATSU LTD.
    Inventors: Nobuyoshi YAMANAKA, Shunsuke MORI, Toshiaki KUMAGAI
  • Publication number: 20190186100
    Abstract: A work vehicle includes a vehicular body, a work implement, a manipulation unit and a controller. The work implement has a boom pivotable with respect to the vehicular body, a dipper stick pivotable with respect to the boom, and a bucket pivotable with respect to the dipper stick. The manipulation unit is operated to output a manipulation command for the work implement. The controller controls the work implement in accordance with the manipulation command received from the manipulation unit. When in accordance with the manipulation command via the manipulation unit the bucket travels in a direction on the side of the back surface of the bucket with respect to the direction of the cutting edge of the bucket, the controller limits movement of the bucket in the direction in accordance with the manipulation command.
    Type: Application
    Filed: November 28, 2016
    Publication date: June 20, 2019
    Applicant: KOMATSU LTD.
    Inventors: Nobuyoshi YAMANAKA, Shunsuke MORI, Toshiaki KUMAGAI
  • Patent number: 6089563
    Abstract: The invention provides a paper supply apparatus for an image reading apparatus, an image reading apparatus with a paper supply apparatus and a paper supply apparatus which can be used suitably with an image scanner wherein a large amount of paper sheets can be taken out one by one with certainty and read successively and rapidly. The paper supply apparatus successively supplies paper sheets accommodated therein to a paper transport mechanism along which an optical image reading mechanism is disposed, and comprises a paper supply hopper, a paper supply roller located above the paper supply hopper for forwarding the paper sheets accommodated in the paper supply hopper, a paper supply roller driving mechanism for rotating the paper supply roller, and a paper separation mechanism for preventing two or more paper sheets forwarded by the paper supply roller from being sent to the paper transport mechanism.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: July 18, 2000
    Assignee: Fujitsu, Ltd.
    Inventors: Yoshihiro Takashimizu, Toshiaki Anzai, Seigo Umeda, Hiroyuki Maruyama, Tadayoshi Nakata, Toshiaki Kumagai, Rika Nishiwaki
  • Patent number: 5715071
    Abstract: The invention provides a paper supply apparatus for an image reading apparatus, an image reading apparatus with a paper supply apparatus and a paper supply apparatus which can be used suitably with an image scanner wherein a large amount of paper sheets can be taken out one by one with certainty and read successively and rapidly. The paper supply apparatus successively supplies paper sheets accommodated therein to a paper transport mechanism along which an optical image reading mechanism is disposed, and comprises a paper supply hopper, a paper supply roller located above the paper supply hopper for forwarding the paper sheets accommodated in the paper supply hopper, a paper supply roller driving mechanism for rotating the paper supply roller, and a paper separation mechanism for preventing two or more paper sheets forwarded by the paper supply roller from being sent to the paper transport mechanism.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: February 3, 1998
    Assignee: Fujitsu Limited
    Inventors: Yoshihiro Takashimizu, Toshiaki Anzai, Seigo Umeda, Hiroyuki Maruyama, Tadayoshi Nakata, Toshiaki Kumagai, Rika Nishiwaki
  • Patent number: 5104084
    Abstract: The present invention provides a seat sliding device for the front seat of a vehicle. The seat sliding device, according to the invention, comprises a vehicle floor surface comprising a floor panel, a soundproof and a vibration-proof member mounted on the floor panel, and a surface layer member formed over the soundproof and vibration-proof member. A cutout portion is provided in the soundproof and vibration-proof member and in the surface layer member for exposing the floor panel, and is formed by linearly cutting out a predetermined portion of the soundproof and vibration-proof member. A linear lower rail is inserted through the linear cutout portion for direct securement thereof to the floor panel, and an upper rail is slidably received within the lower rail and fixed to the seat.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: April 14, 1992
    Assignee: Shiroki Corporation
    Inventors: Toshiaki Kumagai, Youetsu Nagasaka