Patent ID: 7431142

Claim:
A conveyor system defining a three-dimensional conveying track with bends, gradients and twists and therethrough conveying track points, at which load changes occur, the conveying system comprising: a guide channel comprising a plurality of metal or reinforced plastic guide rails ( 4 ) with second running surfaces, the guide channel defining a conveying track, and a plurality of conveyor elements ( 1 ) being connected to each other to form a conveyor chain being movable within the guide channel by being pushed and pulled, each conveyor element comprising a plurality of freely rotating rollers being adapted to roll along the guide rails ( 4 ) and comprising first running surfaces, which are flat in a direction transverse to the orientation of the conveying track, wherein for the coupling-in of load forces acting in different directions, a pair of opposite guide rails ( 4 ) is assigned to each one of the plurality of rollers ( 3 ) and at least part of the rollers of each conveyor element have non-parallel axes, wherein the rollers ( 3 ) comprise a ball bearing with an outer ring of metal, a plastic or polymer running jacket forming the first running surface and a dampening ring being arranged between the outer ring and the running jacket, an axial extension of the outer ring, the dampening ring, the running jacket and the flat first running surface being the same, wherein the guide rails ( 4 ), at least at points of the conveying track, at which load changes occur, are supported on a dampening substrate ( 10 ), wherein the dampening ring ( 6 ) and the dampening substrate ( 10 ) consist of a material which has a smaller module of elasticity than the material of the running jacket ( 5 ) and of the guide rails ( 4 ), and wherein the dampening ring consists of an elastomer and is connected to the outer ring solely by a material fit connection produced by molding the dampening ring onto the outer ring.