Hydraulic friction clamp coupling for shafts

Hydraulically actuatable friction clamp coupling which is used for clamp connecting a shape deformable sleeve to a displaceable drive shaft comprising:

• a shape deformable inner ring which is adapted to engage the sleeve radially relative to a longitudinal axis of the drive shaft, said inner ring being a single piece and including
• a radially outer surface divided into first and second cone surfaces which face one another, said first and second cone surfaces when viewed in axial cross section each including several cone elements such that each of said first and second cone surfaces has a saw-toothed shape in axial cross section;
• first and second outer rings mounted on said inner ring,
• said first and second outer rings having respective inner races provided with respective third and fourth cone surfaces which face one another, said third and fourth cone surfaces when viewed in axial cross section each including several cone elements such that each of said third and fourth cone surfaces has a saw-toothed shape in axial cross section which match respectively with the saw-tooth shapes of said first and second cone surfaces, and
• said first and second outer rings together forming an intermediate, sealed pressure chamber which is filled with a hydraulic pressure medium;
• and
• a pressurizing means for pressurizing the pressure medium in said pressure chamber to press said outer rings longitudinally apart, such that said third and fourth cone surfaces press inwardly against the matching and cooperating said first and second cone surfaces to cause said inner ring to compress and in turn to compress the deformable sleeve into frictional engagement with the drive shaft.