Patent ID: 6897625
Filing Date: 2005-05-24
Classification: B65G

Abstract:
1. A conveyor system for transported goods, comprising: a plurality of conveyors, each conveyor having a preset transport speed that depends on a length of the conveyor, a plurality of asynchronous motors associated with the conveyors, whereby the conveyors and the asynchronous motors are placed into one-to-one correspondence, a plurality of sensors associated with each of the conveyors for measuring an actual transport speed of the conveyors to determine a load dependence of the actual transport speed, and a controller receiving control signals from the sensors for compensating differences between the preset transport speed and the actual transport speed, wherein the sensors associated with one of the conveyors measure a an actual travel time for a transported good traveling at least two of the plurality of sensors located on the same conveyor, and wherein a difference between a nominal travel time and the actual travel time is supplied as a control signal to the controller to control the asynchronous motor of a downstream conveyor so that the downstream conveyor receives the goods with the actual transport speed of the one conveyor.