Patents by Inventor Yu Sakon

Yu Sakon 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: 10584465
    Abstract: A work vehicle includes a vehicle body that includes a heat exchange room in which an opening portion facing a rear side is formed, and a rear passage extending in a width direction along a lower edge portion of the opening portion behind the opening portion, a cooling unit that is provided in the heat exchange room and includes a rear surface facing the rear side, and a blower unit that includes a fan rotationally driven and a movable shroud covering the fan from an outer peripheral side, and that is movable with respect to the vehicle body so that a movement region of the blower unit overlaps the rear passage between a closed position at which the blower unit faces the rear surface of the cooling unit from the rear side and an open position at which the blower unit exposes the rear surface of the cooling unit.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: March 10, 2020
    Assignee: Komatsu Ltd.
    Inventors: Yu Sakon, Yohei Seto, Hirofumi Miyamoto
  • Patent number: 8397869
    Abstract: A ladder device includes a ladder main body, a hand railing, a driving mechanism and a coupling member. One end of the coupling member is pivotably supported by the ladder main body, while the other end thereof is pivotably supported by the hand railing. The coupling member is configured to: position the hand railing between the ladder main body and a walkway when the ladder main body takes the deployed posture; pivot the hand railing in conjunction with a pivot action of the ladder main body from the deployed posture to the retracted posture; and position the hand railing further inwards of the vehicle body than the ladder main body is when the ladder main body takes the retracted posture.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: March 19, 2013
    Assignee: Komatsu Ltd.
    Inventors: Katsuhiro Tsutsumi, Yu Sakon
  • Publication number: 20120205195
    Abstract: A ladder device includes a ladder main body, a hand railing, a driving mechanism and a coupling member. One end of the coupling member is pivotably supported by the ladder main body, while the other end thereof is pivotably supported by the hand railing. The coupling member is configured to: position the hand railing between the ladder main body and a walkway when the ladder main body takes the deployed posture; pivot the hand railing in conjunction with a pivot action of the ladder main body from the deployed posture to the retracted posture; and position the hand railing further inwards of the vehicle body than the ladder main body is when the ladder main body takes the retracted posture.
    Type: Application
    Filed: June 30, 2011
    Publication date: August 16, 2012
    Applicant: KOMATSU LTD.
    Inventors: Katsuhiro Tsutsumi, Yu Sakon