Patents by Inventor Takeo Ootsuka

Takeo Ootsuka 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: 10343510
    Abstract: A dump truck includes: a vehicle body frame; a body supported by the vehicle body frame and configured to be raised or lowered; a plurality of tires provided to the vehicle body frame; an electric motor configured to drive the tires; and a cooling blower configured to feed a cooling air to the electric motor, in which the vehicle body frame at least partially includes a hollow part, and the hollow part defines a duct through which the cooling air passes.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: July 9, 2019
    Assignee: Komatsu Ltd.
    Inventors: Kyouji Uranaka, Takeo Ootsuka, Tomoko Jinno
  • Patent number: 10155543
    Abstract: A dump truck includes: a vehicle body frame; tires provided to the vehicle body frame and configured to travel the dump truck; and a body supported by the vehicle body frame and configured to be raised and lowered, in which the vehicle body frame includes: a first vertical frame vertically standing in a side view at positions of the tires provided to a first side of the vehicle body frame in a travel direction; and a second vertical frame vertically standing in a side view at positions of the tires provided to a second side of the vehicle body frame in the travel direction, and a mount portion on which the body is mounted is provided on an upper portion of each of the first vertical frame and the second vertical frame.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: December 18, 2018
    Inventors: Kyouji Uranaka, Takeo Ootsuka, Kouichi Okamoto
  • Patent number: 9889882
    Abstract: A dump truck includes a suspension and a steering mechanism. The suspension includes: a suspension arm in a form of an upper arm having an up-and-down movable proximal end supported on a vehicle body frame; and a tire support in a form of a casing rotatably attached to a distal end of the upper arm. The steering mechanism includes a steering cylinder having a proximal end attached to the upper arm and a distal end attached to a knuckle arm provided to the tire support.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: February 13, 2018
    Assignee: Komatsu Ltd.
    Inventors: Kyouji Uranaka, Taiga Sasaki, Kouichi Okamoto, Takeo Ootsuka
  • Patent number: 9868343
    Abstract: A dump truck includes: a vehicle body frame; a body supported by the vehicle body frame and configured to be raised or lowered; a plurality of tires provided to the vehicle body frame via a suspension; and a driving unit in a form of an electric motor configured to drive the tires, in which the vehicle body frame includes: supports respectively supporting an upper arm and a lower arm of a suspension arm of the suspension; and a hollow part at least partially in the vicinity of the supports, and the electric motor is fixed to the vehicle body frame while being housed in the hollow part of the vehicle body frame and supported by an inner surface of the hollow part.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: January 16, 2018
    Assignee: Komatsu Ltd.
    Inventors: Kyouji Uranaka, Takeo Ootsuka, Taiga Sasaki
  • Publication number: 20170066318
    Abstract: A dump truck includes: a vehicle body frame; tires provided to the vehicle body frame and configured to travel the dump truck; and a body supported by the vehicle body frame and configured to be raised and lowered, in which the vehicle body frame includes: a first vertical frame vertically standing in a side view at positions of the tires provided to a first side of the vehicle body frame in a travel direction; and a second vertical frame vertically standing in a side view at positions of the tires provided to a second side of the vehicle body frame in the travel direction, and a mount portion on which the body is mounted is provided on an upper portion of each of the first vertical frame and the second vertical frame.
    Type: Application
    Filed: February 27, 2014
    Publication date: March 9, 2017
    Inventors: Kyouji Uranaka, Takeo Ootsuka, Tomoko Jinno
  • Publication number: 20170066480
    Abstract: A dump truck includes: a vehicle body frame; tires provided to the vehicle body frame and configured to travel the dump truck; and a body supported by the vehicle body frame and configured to be raised and lowered, in which the vehicle body frame includes: a first vertical frame vertically standing in a side view at positions of the tires provided to a first side of the vehicle body frame in a travel direction; and a second vertical frame vertically standing in a side view at positions of the tires provided to a second side of the vehicle body frame in the travel direction, and a mount portion on which the body is mounted is provided on an upper portion of each of the first vertical frame and the second vertical frame.
    Type: Application
    Filed: February 27, 2014
    Publication date: March 9, 2017
    Inventors: Kyouji Uranaka, Takeo Ootsuka, Kouichi Okamoto
  • Publication number: 20170015185
    Abstract: A dump truck includes: a vehicle body frame; a body supported by the vehicle body frame and configured to be raised or lowered; a plurality of tires provided to the vehicle body frame via a suspension; and a driving unit in a form of an electric motor configured to drive the tires, in which the vehicle body frame includes: supports respectively supporting an upper arm and a lower arm of a suspension arm of the suspension; and a hollow part at least partially in the vicinity of the supports, and the electric motor is fixed to the vehicle body frame while being housed in the hollow part of the vehicle body frame and supported by an inner surface of the hollow part.
    Type: Application
    Filed: February 27, 2014
    Publication date: January 19, 2017
    Inventors: Kyouji Uranaka, Takeo Ootsuka, Taiga Sasaki
  • Publication number: 20170015352
    Abstract: A dump truck includes a suspension and a steering mechanism. The suspension includes: a suspension arm in a form of an upper arm having an up-and-down movable proximal end supported on a vehicle body frame; and a tire support in a form of a casing rotatably attached to a distal end of the upper arm. The steering mechanism includes a steering cylinder having a proximal end attached to the upper arm and a distal end attached to a knuckle arm provided to the tire support.
    Type: Application
    Filed: February 27, 2014
    Publication date: January 19, 2017
    Inventors: Kyouji Uranaka, Taiga Sasaki, Kouichi Okamoto, Takeo Ootsuka
  • Patent number: D777602
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 31, 2017
    Assignee: KOMATSU LTD.
    Inventors: Takeo Ootsuka, Kouji Uematsu, Yasuyuki Suzuki, Tomoya Kumagai, Kouhei Miyazaki