Patents by Inventor Tomokatsu Tomiyama

Tomokatsu Tomiyama 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).

  • Earthmoving apparatus for construction machine
    Patent number: 9260836
    Abstract: An earthmoving apparatus includes an earthmoving blade (9) extending in the width direction of an undercarriage, a lifting unit (10) configured to move the earthmoving blade (9) up and down, and a cover unit (12) covering the lifting unit (10), wherein the earthmoving blade (9) can be moved by the lifting unit between a grounded position in which the earthmoving blade is in contact with the ground surface and a retracted position in which the earthmoving blade is held highest off the ground surface, while keeping a nearly vertical orientation with respect to the ground surface, the cover unit (12) includes a sub cover (27) extending from a location above the lifting unit (10) toward the earthmoving blade (9) and a main cover (28) slidable on the upper surface of the sub cover (27), the main cover (28) is pivotally attached to the earthmoving blade (9) in such a manner that one end portion of the main cover is nearly in contact with the top surface of the earthmoving blade, and when the earthmoving blade (9) i
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: February 16, 2016
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Akira Nakata, Hiroshi Tsukui, Makoto Oota, Yuuichi Todokoro, Tomokatsu Tomiyama
  • EARTHMOVING APPARATUS FOR CONSTRUCTION MACHINE
    Publication number: 20140318818
    Abstract: An earthmoving apparatus includes an earthmoving blade (9) extending in the width direction of an undercarriage, a lifting unit (10) configured to move the earthmoving blade (9) up and down, and a cover unit (12) covering the lifting unit (10), wherein the earthmoving blade (9) can be moved by the lifting unit between a grounded position in which the earthmoving blade is in contact with the ground surface and a retracted position in which the earthmoving blade is held highest off the ground surface, while keeping a nearly vertical orientation with respect to the ground surface, the cover unit (12) includes a sub cover (27) extending from a location above the lifting unit (10) toward the earthmoving blade (9) and a main cover (28) slidable on the upper surface of the sub cover (27), the main cover (28) is pivotally attached to the earthmoving blade (9) in such a manner that one end portion of the main cover is nearly in contact with the top surface of the earthmoving blade, and when the earthmoving blade (9) i
    Type: Application
    Filed: October 5, 2012
    Publication date: October 30, 2014
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Akira Nakata, Hiroshi Tsukui, Makoto Oota, Yuuichi Todokoro, Tomokatsu Tomiyama