Patents by Inventor Shigehiko Ohta

Shigehiko Ohta 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).

  • Impact absorbing mechanism of walking robot
    Patent number: 7525275
    Abstract: An impact absorbing mechanism, provided to a foot 5 of an extremity of each of two movable legs 2 of a bipedal walking robot 1 having the two movable legs 2, includes: an upper base plate 5-a joined to a foot joint 4 of each of the movable legs 2; a lower base plate 5b positioned below the upper base plate, and being opposite to the upper base plate; and three elastic members 6 anisotropic in terms of elasticity, which are arranged at equal intervals in the circumferential direction about the yaw axis YA extending in a direction perpendicular to the upper base plate 5a, between the upper base plate 5a and the lower base plate 5b, each of which allows the lower base plate 5b to make elastic displacement relative to the upper base plate 5a in the same direction as axis YA extends, while each of which inhibits the lower base plate 5b from making elastic displacement relative to the upper base plate 5a in directions orthogonal to the yaw axis direction, and which join the upper base plate 5a and the lower base pl
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: April 28, 2009
    Assignee: Kawada Industries
    Inventors: Shigehiko Ohta, Toshikazu Kawasaki, Takakatsu Isozumi
  • Impact absorbing mechanism of walking robot
    Publication number: 20060237241
    Abstract: An impact absorbing mechanism, provided to a foot 5 of an extremity of each of two movable legs 2 of a bipedal walking robot 1 having the two movable legs 2, includes: an upper base plate 5-a joined to a foot joint 4 of each of the movable legs 2; a lower base plate 5b positioned below the upper base plate, and being opposite to the upper base plate; and three elastic members 6 anisotropic in terms of elasticity, which are arranged at equal intervals in the circumferential direction about the yaw axis YA extending in a direction perpendicular to the upper base plate 5a, between the upper base plate 5a and the lower base plate 5b, each of which allows the lower base plate 5b to make elastic displacement relative to the upper base plate 5a in the same direction as axis YA extends, while each of which inhibits the lower base plate 5b from making elastic displacement relative to the upper base plate 5a in directions orthogonal to the yaw axis direction, and which join the upper base plate 5a and the lower base pl
    Type: Application
    Filed: September 10, 2003
    Publication date: October 26, 2006
    Inventors: Shigehiko Ohta, Toshikazu Kawasaki, Takakatsu Isozumi