Patent ID: 6373244
Filing Date: 2002-04-16
Classification: G01C,G01V

Abstract:
An apparatus for locating positions on a surface of a structural member indicating the presence of elements in the form of steel reinforcement, water pipes and electrical lines within and below the surface of the structural member, comprising a housing (2) movable in a linear direction of movement (S) over the surface of the structural member, a detector (1) located within said housing (2), said detector includes a scanning head (3) mounted in said housing above the surface of the structural member surface for detecting elements within and below the surface of the structural member, a position measuring device (4) within said housing for locating on the surface of the structural member the position of an element within the structural member spaced below the surface after said housing has traversed a predetermined distance, an evaluation unit (5) including memory and computing components disposed in said housing for collecting data from said scanning head (3), said position measuring device arranged in communication with said evaluation unit, a marking device (6) connected to and interacting with said evaluation unit (5) for automatically placing a visible marking on the surface of the structural member displaying the location of the element scanned by said detector (1) when the predetermined distance has been traversed by said housing, said marking device (6) spaced rearwardly by the predetermined distance in the direction of movement (S) from said scanning head (3), and placing the visible marking on the surface when the housing (2) has moved the predetermined distance.