Operating table

1. An operating table, the operating table comprising:

a movable base; and

four casters, each of the casters having a pivot lever, wherein each of the four casters is pivotable about a horizontal axis via the corresponding pivot lever fastened to the movable base from a driving position into a standing position, and wherein:

the pivot levers of a first caster pair of the four casters are connected to one another by a common drive and a linkage, and

the drive and the linkage are movable between the pivot axes of the two pivot levers independent of the base.

2. The operating table of claim 1 , wherein the drive includes a motor.

3. The operating table of claim 1 , wherein the drive causes a linear movement, and the drive and the linkage are freely movable relative to the base in the direction of movement of the drive.

4. The operating table of claim 1 , wherein the pivot lever includes a pivot plate that is pivotally connected to the base and to which a caster is fastened.

5. The operating table of claim 1 , wherein the pivot levers of a second caster pair of the four casters are also connected to one another via a common drive and a linkage, and wherein the drive and the linkage are movable between the pivot axes of the two pivot levers independent of the base.

6. The operating table of claim 1 , wherein all of the casters are swivel casters.

7. The operating table of claim 1 , further comprising a measuring device that determines the contact pressure between the casters of the caster pair and the floor.

8. The operating table of claim 2 , further comprising a measuring device that:

determines the contact pressure between the casters of the caster pair and the floor, and

detects the power consumption of the motor.

9. The operating table of claim 1 , wherein the base has four defined supports and a measuring device that determines the support force provided at all supports.

10. An operating table, the operating table comprising:

a movable base;

first, second, third and fourth casters provided at the base, the casters forming a first and second caster pair;

first, second, third and fourth pivot levers each mounted on the base for pivoting movement about a respective pivot axis, and wherein:

each caster is pivotable about a horizontal axis via a respective pivot lever from a driving position in which the base is movable relative to the floor into a standing position in which the base is supported in a stationary position on the floor,

the pivot levers a first caster pair of the four casters are connected to one another by a common drive and a linkage, and

the drive and the linkage are movable between the pivot axes of the pivot levers associated with the caster pair and are independent of the base.

11. A method for positioning an operating table on a floor, the operating table having a movable base which is provided with four casters which are each pivotable about a horizontal axis via a pivot lever fastened to the base from a driving position into a standing position, wherein the pivot levers of a first caster pair of the four casters are connected to one another by a common drive and a linkage, wherein the drive and the linkage are movable between the pivot axes (B) of the two pivot levers independent of the base and wherein the base has four defined supports and a measuring device for determining the support force provided at all supports, the method comprising pivoting the casters of the base at a desired location of the operating table from their moving position into an end position in which the base is completely lowered onto the floor, with the drive subsequently being actuated for so long until all four measuring devices output a substantially coinciding measured value.

12. The operating table of claim 2 , wherein the motor is a single electric motor.

13. The operating table of claim 2 , further comprising a self-locking transmission.