Patent ID: 7448800

Claim:
A ceiling support for holding a technical medical radia-tion source, with a telescope ( 2 ) made of several telescopic tubes ( 3 ), which is connected via a first cable ( 12 ) with a device for compensation of the weight of the radiation source to be in-stalled on the free end of the telescope ( 2 ), wherein the device for compensation is comprised of: a cable drum ( 11 ) for winding and unwinding the first cable ( 12 ), a spiral winch ( 15 ) which is connected with the cable drum ( 11 ), wherein the spiral winch ( 15 ) is connected via a second cable ( 16 ) with a sliding element ( 8 ) which can be shifted against the force of a pressure spring ( 6 ), and wherein a radius of the spiral winch ( 15 ) decreases with in-creasing pressure of the pressure spring ( 6 ) so that a torque compensating the weight remains essentially constant regard-less of the particular length of the telescope ( 2 ).