Patent ID: 8096013

Claim:
A wiper having a wiper arm ( 1 ) and having a fastening element ( 3 ), with the fastening element ( 3 ) being fastened to the wiper arm ( 1 ), and with the fastening element ( 3 ) having a hub ( 4 ) configured to be plugged onto a drive shaft ( 5 ) that merges into a screw which can be screwed into a nut for securing the fastening element and the wiper arm to the drive shaft, characterized in that the fastening element ( 3 ) is inserted in a form-fitting manner, in one of at least two possible alignments, into a cutout ( 2 ) in the wiper arm ( 1 ), in that the fastening element ( 3 ) has, at an outer edge, a knurling ( 8 , 9 ) which engages into a corresponding knurling ( 10 , 11 ) on an edge of the cutout ( 2 ), the outer edge of the fastening element ( 3 ) being positioned in facing relation with the edge of the cutout ( 2 ), the outer edge of the fastening element ( 3 ) having a portion with the knurling ( 8 , 9 ) and another portion without a knurling, the portion with the knurling ( 8 , 9 ) projecting from the portion without the knurling, the edge of the cutout ( 2 ) having a portion with the corresponding knurling ( 10 , 11 ) and another portion without a corresponding knurling, the portion with the corresponding knurling ( 10 , 11 ) being recessed into the portion without the corresponding knurling, and in that, in at least one alignment of the fastening element ( 3 ) in the cutout ( 2 ), a portion of the knurling ( 8 , 9 ) on the fastening element ( 3 ) being disengaged from the corresponding knurling ( 10 , 11 ) on the cutout ( 2 ).