Patent ID: 8096007

Claim:
A lifting column ( 110 ) comprising two or more telescopically arranged column elements ( 111 , 112 ) arranged symmetrically one on either side of a vertical imaginary plane ( 150 ), where each column element ( 111 , 112 ) comprises at least two column sub-elements ( 113 , 113 ′, 114 , 114 ′), an inner and an outer column sub-element, where each column sub-element ( 113 , 113 ′ , 114 , 114 ′) is arranged symmetrically on either side of said vertical plane ( 150 ), with the inner set of column sub-elements ( 113 , 113 ′) closer to the plane ( 150 ) than the outer set of sub-elements ( 114 , 114 ″), where the outer sub-elements ( 114 , 114 ′) are slidingly connected to adjacent inner sub-elements ( 113 , 113 ′) by means of guiding sledges ( 70 ), and further where each column sub-element comprises at least two pulley wheels ( 105 ), one upper and one lower pulley wheel, and further where a flexible member ( 50 ) is arranged symmetrically around the upper and lower pulley wheels on the sub-elements such that if the flexible member is arranged on the upper pulley wheel on the inner most sub-element the flexible member continues down to the lower pulley on that element, and from there to the upper pulley wheel on the adjacent outer sub-element, and from there down to the lower pulley wheel of that same element, before either continuing up to the upper pulley wheel on a further sub-element arranged adjacently and so forth or being led to and fixed to a drive wheel ( 60 ) on a rotatable axle of an actuating motor, and when the flexible member is arranged symmetrically around the lower pulley wheels on the inner most sub-elements, the flexible element continues up to the upper pulley wheels on the adjacent sub-elements, from where it continues down to the lower pulley wheels on the same sub-element before either continuing up to the upper pulley wheel on a further sub-element arranged adjacently and so forth or being led to and fixed to a drive wheel ( 60 ) on a rotatable axle of an actuating motor.