| 摘要 |
<p>The device (31) includes two rotatable arms (20,19) with respective windscreen-wiper blades (28,26) for wiping respective areas (29,27) of the windscreen (18) in front of the driver's seat and adjacent passenger seat respectively; and an electric motor (23) coupled with the said arms (20,19) by linkage systems. The motor (23) is coupled to the second arm (19) by a transmission device suitable to assume selectively a first and second condition in which it causes the oscillation of the blade (26) of the second arm (19) over a first or a second angular area having a minimum and maximum overlap respectively with the area (29) wiped by the blade (28) of the first arm (20), such that in the said second condition a substantial portion (33) of the windscreen (18)in front of the driver is wiped by the blade (28) of the first arm (20) and the blade (26) of the second arm (19). <IMAGE></p> |
