Cable pulling device for use in windscreen wiper for wiping window pane of car, has cable elements comprising controllable smart material elements that are formed corresponding to material under effect of excitation of external product

摘要

The device has cable elements (12a) comprising selectively controllable smart material elements (14a) that are formed corresponding to a material under an effect of an excitation of external product, which produces a reversible variation of a parameter of the material. The cable elements are partially formed as active elements of actuators (16a). The smart material elements are partially formed as an electro-active material. Field generation units (20a) generate an electric field.