Patents Assigned to Morgan Est plc
  • Method and apparatus for surveying the geometry of tunnels
    Patent number: 6844923
    Abstract: This invention relates to a method and apparatus for surveying the geometry of tunnels comprising measuring the position of a tunnel surface relative to an absolute three-dimensional coordinate system, using at least one reflectorless distance sensor mounted for orientation in three dimensions and calculating a deviation from a predefined geometry for the surface and displaying said deviation in real time.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: January 18, 2005
    Assignees: Morgan Est plc, Beton- und Monierbau GesmbH
    Inventors: Gerhard Weithe, Werner Endres, Christian Neumann, Colin Eddie