Patent ID: 6959620

Claim:
Device for balancing of radial eccentricity of a spindle drive ( 1 ) to avoid blocking of the spindle drive during lifting movement of a platform ( 2 ), comprising: a platform for lifting objects (S) said platform being mounted by several bearing devices (L 1 ; L 2 ; L 3 ; L 4 ) respectively arranged on several axiparallel spindles (G 1 ; (G 2 ; G 3 ; G 4 ), lifted axially along the spindles together, said bearing devices (L 1 ; L 2 ; L 3 ; L 4 ) having respective radial bearing clearances (F 1 ; F 2 ) in a polygonal arrangement; and said bearing devices (L 1 ; L 2 ; L 3 ; L 4 ) being of a low-friction type, and arranged with radial bearing clearance (F 1 ; F 2 ) to balance the radial eccentricity of the rotating threaded spindle so that a relative radial movement of the rotating spindles to platform ( 2 ) with limited friction force is possible.