Patents Assigned to Kabushiki Kaisha Aoki Kensetsu
  • Patent number: 4311411
    Abstract: A pipe jacking apparatus comprises a shield type tunneling machine equipped with direction adjusting jacks, a tubular body joined to the rear of the shield type tunneling machine, and a thrust jack provided within a thrust pit and thrusting forward a pipe member placed between the shield tunneling machine and the thrust jack, in cooperation with the shield type tunneling machine. The aforesaid tubular body includes a panel therein having output gages for the aforesaid jacks and a mark representing the center of the tubular body, and a TV camera for taking a picture of the panel. This TV camera is connected to a TV receiver provided in a remote control unit. In the aforesaid pit, there is provided an optical unit having a line of collimation directed to a predetermined direction to thrust a pipe, or a light source for light beams.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: January 19, 1982
    Assignees: Kabushiki Kaisha Iseki Kaihatsu Koki, Kabushiki Kaisha Aoki Kensetsu
    Inventors: Toshio Akesaka, Takeshi Hada