Patents by Inventor Kensaku Wakuta

Kensaku Wakuta 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: 20220142140
    Abstract: An agricultural work vehicle is provided with crawler travel parts, support platform frames, a front/back structure, an engine, a hydraulic pump, a tank frame, and an injection nozzle unit. The crawler travel parts travel so as to hold a plant therebetween in the left/right direction. The support platform frames are disposed as a left/right pair, respectively overlapping with the left/right crawler travel parts in plan view. The front/back structures each include a left frame, a right frame, and a coupling frame. The engine is disposed at the left or right support platform frame. The hydraulic pump is disposed on the same side, out of the left and right support platform frames, as the engine, and is driven by the engine. A hydraulic oil tank is located on the opposite side in the left/right direction from the left support platform frame where the engine is disposed, and stores hydraulic oil to be supplied to the hydraulic pump.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 12, 2022
    Applicant: Yanmar Power Technology Co., Ltd.
    Inventor: Kensaku Wakuta
  • Patent number: 7857086
    Abstract: A working vehicle in accordance with the present invention is provided with an engine mounted on a front portion of a vehicle body frame constructing a traveling vehicle body, a backhoe arranged on a rear portion of the vehicle body frame, a mower device arranged below the vehicle frame, a seating detecting means detecting a seating of an operator in a control seat on the traveling vehicle body, an engine stop mechanism stopping the engine, and a shift control means for controlling so as to increase and decrease forward and backward moving speeds of the traveling vehicle body. Further, in consideration for a safety at a time of an excavating work by the backhoe, the structure is made such that the engine stop mechanism is actuated at a time of operating the shift control means in the case that the seating detecting means is in an on state, and the seating detecting means is retained to the on state regardless of the seating of an operator in the case that the control seat is directed backward.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: December 28, 2010
    Assignee: Yanmar Co., Ltd.
    Inventors: Kensaku Wakuta, Kazuhiko Miyamoto, Masahiro Hanafusa, Junko Shibaoka
  • Patent number: 7757805
    Abstract: In a working vehicle in which a backhoe support frame for reinforcing is provided in a rear end portion of a vehicle body frame, and a transmission case is mounted on a rear portion of the vehicle body frame so as to be close to the backhoe support frame, each of support brackets provided in an outer side surface of a rear portion of each of main frames constructing the vehicle body frame so as to protrude outward is connected to a protruding end portion protruding to rightwardly and leftwardly relative to each of lower brace members in a reinforcing plate supporting a lower surface of the transmission case in a state in which a rear axle case protruding outward from the right and left side surfaces of the transmission case is sandwiched from upper and lower sides, in order to dissolve a risk that a load generated at a time of traveling in a backhoe installed state or at a time of an excavating work by the backhoe is propagated to the transmission case.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: July 20, 2010
    Assignee: Yanmar Co., Ltd.
    Inventors: Kensaku Wakuta, Kazuhiko Miyamoto
  • Publication number: 20090313861
    Abstract: In a working vehicle in which a backhoe support frame for reinforcing is provided in a rear end portion of a vehicle body frame, and a transmission case is mounted on a rear portion of the vehicle body frame so as to be close to the backhoe support frame, each of support brackets provided in an outer side surface of a rear portion of each of main frames constructing the vehicle body frame so as to protrude outward is connected to a protruding end portion protruding to rightwardly and leftwardly relative to each of lower brace members in a reinforcing plate supporting a lower surface of the transmission case in a state in which a rear axle case protruding outward from the right and left side surfaces of the transmission case is sandwiched from upper and lower sides, in order to dissolve a risk that a load generated at a time of traveling in a backhoe installed state or at a time of an excavating work by the backhoe is propagated to the transmission case.
    Type: Application
    Filed: June 24, 2008
    Publication date: December 24, 2009
    Applicant: YANMAR CO., LTD.
    Inventors: Kensaku Wakuta, Kazuhiko Miyamoto
  • Publication number: 20090313862
    Abstract: A working vehicle in accordance with the present invention is provided with an engine mounted on a front portion of a vehicle body frame constructing a traveling vehicle body, a backhoe arranged on a rear portion of the vehicle body frame, a mower device arranged below the vehicle frame, a seating detecting means detecting a seating of an operator in a control seat on the traveling vehicle body, an engine stop mechanism stopping the engine, and a shift control means for controlling so as to increase and decrease forward and backward moving speeds of the traveling vehicle body. Further, in consideration for a safety at a time of an excavating work by the backhoe, the structure is made such that the engine stop mechanism is actuated at a time of operating the shift control means in the case that the seating detecting means is in an on state, and the seating detecting means is retained to the on state regardless of the seating of an operator in the case that the control seat is directed backward.
    Type: Application
    Filed: September 18, 2008
    Publication date: December 24, 2009
    Inventors: Kensaku Wakuta, Kazuhiko Miyamoto, Masahiro Hanafusa, Junko Shibaoka
  • Patent number: D547333
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: July 24, 2007
    Assignee: Yanmar Co., Ltd.
    Inventors: Yoichiro Nishi, Kensaku Wakuta, Toshikazu Matsubayashi, Junko Shibaoka, Kunihiko Matsumoto, Kenji Shiba, Yuki Otomo, Naoki Yamamoto, Masahiro Hanafusa