Patent ID: 7681469

Claim:
A drive device for driving a moveable component relative to a fixed component, said device comprising: a first fastening element which can be connected to one of said moveable component and said fixed component; a housing tube which is axially movable relative to said first fastening element, said housing tube having an end opposite said first fastening element which carries a second fastening element which can be connected to the other of said moveable component and said fixed component; an overtube configured to telescopically receive the axially displaceable housing tube at a first end; a guide tube having at least one axial slot, the guide tube arranged coaxially with the overtube at a second end of the overtube, the guide tube being axially and rotationally fixed to the housing; a threaded spindle having one end mounted for rotation in the housing tube and fixed against axial movement with respect to the housing tube; a spindle tube configured to coaxially surround the threaded spindle, a diameter of the spindle tube being smaller than a diameter of the guide tube, the spindle tube configured for axial displacement in the guide tube; a spindle nut arranged on the threaded spindle, said spindle nut being connected to the first fastening element and secured against rotation with respect to the housing tube, the spindle nut being guided by at least one element protruding radially into the at least one axial slot; and a rotary drive which can drive said spindle in rotation.