Patent ID: 8584303

Claim:
A wiper arm for a window wiper system, with a wiper rod ( 2 ) and a control rod ( 5 ) which is movable relative to the wiper rod ( 2 ) and is coupled to the wiper rod ( 2 ), wherein the control rod ( 5 ) is fixed on a joint head ( 13 ) of a window wiper system by means of a joint socket ( 21 ), characterized in that the joint socket ( 21 ) includes a joint socket component ( 14 ) which is separate from a fastening component ( 11 ) fixed on the control rod ( 5 ), wherein the joint head includes a ball seated in a socket of the joint socket component to form a ball and socket joint, the joint socket component having an insertion opening centered on a first axis and the joint head extending into the socket through the insertion opening, wherein the fastening component ( 11 ) defines a receptacle in which the joint socket component is seated, wherein the fastening component has an entrance opening through which the first axis passes and through which the joint head extends, the entrance opening being smaller than the joint socket component such that the joint socket component cannot be inserted into the receptacle through the entrance opening, and wherein the fastening component has therein a second opening centered on a second axis transverse to the first axis, the second opening being sized to allow insertion of the joint socket component into the receptacle.