Wiper for multiple and independent surfaces

摘要

A singular wiper for wiping multiple and independent surfaces which obviates the conventional need for a wiper respectively for each of the surfaces. The wiper includes a wiper motor assembly, a wiper arm connected to the wiper motor assembly, a blade assembly connected to the wiper arm, and a cam having a cam profile. The wiper motor assembly reciprocates the wiper arm and thereby reciprocates the blade assembly over a predetermined range of reciprocation. The cam profile interacts with the wiper arm in a normal direction that is perpendicular to the plane of reciprocation of the wiper assembly so as to selectively regulate contact of the blade assembly with various surfaces disposed in the range of reciprocation of the blade assembly.