Patent ID: 6161429
Filing Date: 2000-12-19
Classification: G01C

Abstract:
Apparatus for measuring profiles of a surface comprising:a transport means that moves along said surface,a first profiling means on a first side of said transport means, said first profiling means including an elongated first beam having a wheel at a front end and a wheel at a back end, a first surface engagement means intermediate said front and back ends that is vertically deflected by irregularities in said surface, and a first profile measuring device for generating a first electrical signal proportional to the deflection of said first surface engagement means by said irregularities,a second profiling means on a second side of said transport means opposite and spaced a selected lateral distance from said first profiling means, said second profiling means including an elongated second beam having a wheel at a front end and a wheel at a beck end, a second surface engagement means intermediate said front and back ends that is vertically deflected by irregularities in said surface and a second profile measuring device for generating a second electrical signal proportional to the deflection of said second surface engagement means by said irregularities, anda distance measuring device connected to said first profiling means for generating a third electrical signal proportional to the horizontal distance traveled by said first profiling means.