Patent ID: 6115129
Filing Date: 2000-09-05
Classification: B66C

Abstract:
A system for producing an indication of the position of cargo in a container comprising:a pair of lasers secured to a pick-up unit that moves the cargo, the pair of lasers producing laser lines oriented generally perpendicular to the length of the pick-up unit, the laser lines crossing at a pre-defined distance below a bottom surface of the cargo wherein the pick-up unit is lowered until the laser lines appear to overlap at which time an operator knows the cargo is at the predefined distance above a surface; anda laser secured to the pick-up unit and positioned to produce an indication of a horizontal distance between the pick-up unit and a wall, the laser being oriented such that it produces a laser line wherein the wall intercepts the laser line as the pick up unit is moved towards the wall, wherein the pick-up unit is a predefined distance away from the wall when the laser line appears completely on the wall.