Patents by Inventor Hirotaka Toda

Hirotaka Toda 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: 11882789
    Abstract: A work vehicle includes a running vehicle body, a floor forming a bottom portion of an operation part of the running vehicle body, a fuel tank arranged below the floor, a lawn mower suspended from a lower part of the running vehicle body, a front suspension arm for suspending a front portion of the lawn mower, and a rear suspension arm for suspending a rear portion of the lawn mower. The rear suspension arm is arranged to avoid the fuel tank.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: January 30, 2024
    Assignee: ISEKI & CO., LTD.
    Inventors: Narutoshi Ishioka, Hirotaka Toda
  • Publication number: 20210251138
    Abstract: A work vehicle includes a running vehicle body, a floor forming a bottom portion of an operation part of the running vehicle body, a fuel tank arranged below the floor, a lawn mower suspended from a lower part of the running vehicle body, a front suspension arm for suspending a front portion of the lawn mower, and a rear suspension arm for suspending a rear portion of the lawn mower. The rear suspension arm is arranged to avoid the fuel tank.
    Type: Application
    Filed: October 21, 2020
    Publication date: August 19, 2021
    Applicant: ISEKI & CO., LTD.
    Inventors: Narutoshi ISHIOKA, Hirotaka TODA
  • Patent number: 9408345
    Abstract: In a work vehicle, because of growing need to equip a DPF for exhaust gas countermeasures near an engine and a request of increasing the size of a fuel tank, a system including the fuel tanks provided below a floor step and on left and right sides of a transmission case has been employed. However, when a lawn mower is installed between front wheels and rear wheels, an increasing width of a vehicle body becomes a problem. To solve the problem, a locus of the raising and lowering operation of a lawn mower 5 is specified by a parallel link formed of left and right front links 43, 43 and left and right mid links 45, 45, and in a work vehicle where the lawn mower 5 is freely raised and lowered, the left and right mid links 45, 45 are respectively disposed between a transmission case 3 and fuel tanks 16L, 16L.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 9, 2016
    Assignee: ISEKI & CO., LTD.
    Inventors: Satoshi Matsugi, Hirotaka Toda
  • Publication number: 20150000238
    Abstract: In a work vehicle, because of growing need to equip a DPF for exhaust gas countermeasures near an engine and a request of increasing the size of a fuel tank, a system including the fuel tanks provided below a floor step and on left and right sides of a transmission case has been employed. However, when a lawn mower is installed between front wheels and rear wheels, an increasing width of a vehicle body becomes a problem. To solve the problem, a locus of the raising and lowering operation of a lawn mower 5 is specified by a parallel link formed of left and right front links 43, 43 and left and right mid links 45, 45, and in a work vehicle where the lawn mower 5 is freely raised and lowered, the left and right mid links 45, 45 are respectively disposed between a transmission case 3 and fuel tanks 16L, 16L.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Applicant: ISEKI & CO., LTD.
    Inventors: Satoshi MATSUGI, Hirotaka Toda