Wiper assembly for sweeping a glass surface on a vehicle

摘要

A wiper assembly for sweeping a glass surface on a vehicle. The wiper assembly includes a windshield washer assembly connected to the windshield wiper drive arm of the vehicle for controllably dispensing washer fluid directly down onto the glass surface of the vehicle. The wiper assembly also includes a novel control unit carried by the vehicle for controlling the dispensing of the washing liquid from the windshield washer assembly. Uniquely, the control unit includes a sensor that is operably associated with the pump for sensing the position of the wiper arm as it moves upwardly and downwardly relative to the glass surface and for controllably energizing the pump at selected positions of the wiper drive arm so that the washer fluid is always dispensed forwardly of the wiper blade to avoid smearing.