Patents Assigned to Kabushiki Kaisha Komatsu Seisakusho Corporation
  • Apparatus for detecting position of underground excavator
    Patent number: 5107938
    Abstract: An apparatus for detecting a position of an underground excavator in tunneling the earth measures automatically: a three-dimensional position of the excavator relative to a predetermined reference position, or three-dimensional positions of a pair of underground excavators relative to each other. The excavators are disposed in opposite ends of a tunnel to be dug, and dig the tunnel toward each other.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: April 28, 1992
    Assignee: Kabushiki Kaisha Komatsu Seisakusho Corporation
    Inventors: Akira Okamoto, Shoichi Sakanishi, Norio Mitani, Yoshihisa Yamamoto