Patent ID: 8550431

Claim:
A method of connecting a first shaft and a second shaft, comprising: providing an exterior profile of a free end of the first shaft, wherein the first shaft has a longitudinal axis about which the first shaft is rotatable; providing a coupling part having a recess, the recess having an internal profile; connecting the coupling part in a rotationally fixed manner to the second shaft; and releasably engaging the coupling part with the first shaft, wherein the external profile of the free end of the first shaft releasably engages the internal profile of the recess of the coupling part by insertion in an axial direction of the longitudinal axis of the first shaft, wherein the external profile of the free end of the first shaft includes two lateral faces on opposite sides of the free end, and wherein at least one lateral face of the internal profile of the recess of the coupling part is a convex lateral face made convex in the axial direction of the longitudinal axis of the first shaft, and wherein, after axial insertion of the free end of the first shaft into the recess of the coupling part, a width of the recess of the coupling part and a radius of curvature of the convex lateral face of the internal profile of the recess enable a pivoting movement of the longitudinal axis of the first shaft in the coupling part that is limited to an angle of less than 3°.