Patent ID: 8113230

Claim:
An axial locking of a valve shaft to be non-turnably attached to a closing element of a valve, an end of the shaft to be attached to the closing element being machined on two opposite sides in order to fit into a pivot recess formed in an outer perimeter of the closing element, wherein: a collar part is provided to be fitted to the end of the shaft, a main portion of the collar part includes a central hole having a cross sectional form that permits reception of the machined end of the shaft in a particular mutual position of the shaft and the collar part, and on the outer perimeter of the shaft, at an inner portion of the machined end, there is a circular groove having a width corresponding to a length of the main portion of the collar part and a depth permitting rotation of the collar part to be turned into a locking position, one of the end surfaces of the main part of the collar part having at least one axial projection that fits into the pivot recess of the closing element of the valve together with the machined end of the shaft with the collar part in the locking position.