Patent ID: 7163184
Filing Date: 2007-01-16
Classification: A47B

Abstract:
1. A lifting column comprising first and second mutually telescopically slidable members and a drive device therefor, said drive device comprising a stick-shaped element which mounts first and second chain wheels at opposite ends thereof, said first chain wheel including a shaft, an endless first chain running over and between said first and second chain wheels to define a first chain run and a second chain run between the two chain wheels, said stick-shaped element at least in part extending between said first and second chain runs, an electric motor and a transmission mounted on the stick-shaped element, said transmission being directly connected to said electric motor and to said first chain wheel, separately from said endless first chain, to drive said first chain wheel and thus move said endless first chain along said first and second chain runs, and first connection means attached to said chain along said first chain run for moving one of said first and second slidable members, said electric motor being directly mounted on said stick-shaped element and fixedly positioned relative to said stick-shaped element.