Patents by Inventor Tomoyuki IWASAWA

Tomoyuki IWASAWA 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
    Patent number: 9945101
    Abstract: A work vehicle includes a drive unit, a fan motor, a fan configured to be driven by the fan motor, an overrun state detecting unit configured to detect an overrun state of the drive unit, and a control unit. The control unit is configured to control a rotational speed of the fan to reach a first fan rotational speed by increasing the rotational speed of the fan when a detection value detected by the overrun state detecting unit becomes greater than or equal to a first threshold. The control unit is configured to control the rotational speed of the fan to reach a second fan rotational speed higher than the first fan rotational speed when the detection value becomes greater than or equal to a second threshold greater than the first threshold.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: April 17, 2018
    Assignee: KOMATSU LTD.
    Inventors: Yoshiaki Hino, Kazuyuki Kirino, Tomoyuki Iwasawa
  • WORK VEHICLE
    Publication number: 20160281328
    Abstract: A work vehicle includes a drive unit, a fan motor, a fan configured to be driven by the fan motor, an overrun state detecting unit configured to detect an overrun state of the drive unit, and a control unit. The control unit is configured to control a rotational speed of the fan to reach a first fan rotational speed by increasing the rotational speed of the fan when a detection value detected by the overrun state detecting unit becomes greater than or equal to a first threshold. The control unit is configured to control the rotational speed of the fan to reach a second fan rotational speed higher than the first fan rotational speed when the detection value becomes greater than or equal to a second threshold greater than the first threshold.
    Type: Application
    Filed: March 27, 2015
    Publication date: September 29, 2016
    Inventors: Yoshiaki HINO, Kazuyuki KIRINO, Tomoyuki IWASAWA