Patent ID: 8322502

Claim:
A hydrodynamic coupling comprising two blade wheels comprising an outer wheel and an inner wheel, which together form a toroidal working chamber; a coupling shell being connected fixedly in terms of rotation with said outer wheel and which encloses a part of said inner wheel; a synchronizer clutch, having two clutch elements, which can be brought into operative contact with the surface of a friction lining; said inner wheel being divided into a least two segments, which can be displaced radially or be pivoted around an axis that is parallel to the rotational axis; a first of said two clutch elements being formed by the at least two segments; wherein the inner wheel has a hole and the coupling shell has a hole and wherein said hole of said inner wheel and said hole of said coupling shell are capable of being aligned with one another or at least partially overlapped when the inner wheel and the coupling shell are rotated relative to each other; the hole of the coupling shell being larger than the hole of the inner wheel; and a measuring pin for passing through the two holes.