Patents by Inventor Yoshimasa Ohbora

Yoshimasa Ohbora 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).

  • Work vehicle and work vehicle control method
    Patent number: 8833068
    Abstract: A lock valve switching section switches a lock valve from a locked state to a released state when a lock member is switched from a locked position to a release position. An erroneous operation monitoring section maintains the lock valve in the released state when the pilot pressure is equal to or more than a predetermined pressure when elapsed time, which is from a point in time where the lock member is switched from the locked position to the release position, is equal to or more than the predetermined time. The erroneous operation monitoring section switches the lock valve to the locked state when the pilot pressure is equal to or more than the predetermined pressure when the elapsed time is less than the predetermined time.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 16, 2014
    Assignee: Komatsu Ltd.
    Inventors: Manabu Himoto, Daisuke Tsumura, Yoshimasa Ohbora, Jin Yogita
  • WORK VEHICLE AND WORK VEHICLE CONTROL METHOD
    Publication number: 20140060026
    Abstract: A lock valve switching section switches a lock valve from a locked state to a released state when a lock member is switched from a locked position to a release position. An erroneous operation monitoring section maintains the lock valve in the released state when the pilot pressure is equal to or more than a predetermined pressure when elapsed time, which is from a point in time where the lock member is switched from the locked position to the release position, is equal to or more than the predetermined time. The erroneous operation monitoring section switches the lock valve to the locked state when the pilot pressure is equal to or more than the predetermined pressure when the elapsed time is less than the predetermined time.
    Type: Application
    Filed: December 6, 2012
    Publication date: March 6, 2014
    Applicant: KOMATSU LTD.
    Inventors: Manabu Himoto, Daisuke Tsumura, Yoshimasa Ohbora, Jin Yogita