Patent ID: 7191487

Claim:
A wiper apparatus for a vehicle comprising: a pivot holder adapted to be fixedly mounted to the vehicle; a wiper arm pivot rotatably mounted in the pivot holder, the pivot including an inner pivot shaft and an outer pivot shaft, the inner pivot shaft telescopingly mounted in the outer pivot shaft for movement between a first position in which a wiper arm mountable on the inner pivot shaft is disposed in a normal wiping position and a second position in which the inner pivot shaft is at least partially telescoped within the outer pivot shaft; means for releasably holding the inner pivot shaft in the first position relative to the outer pivot shaft, the holding means including means for axially fixing the inner pivot shaft to the outer pivot shaft in the first position, the fixing means subject to a force acting along an interface between an inner wall of the outer pivot shaft and an outer wall of the inner pivot shaft and shearable at a predetermined impact force to allow movement of the inner pivot shaft with respect to the outer pivot shaft from the first position; and energy absorption means, carried between the inner pivot shaft and the outer pivot shaft and acting against the inner pivot shaft, for controlling the movement of the inner pivot shaft from the first position to the second position under impact forces exceeding a predetermined force acting on the inner pivot shaft.