Invention Grant
US5606764A Windshield wiper system having a wiper blade capable of retraction for hidden park 失效
挡风玻璃刮水器系统具有能够收回隐藏的公园的刮水片

Windshield wiper system having a wiper blade capable of retraction for
hidden park
Abstract:
A windshield wiper system for automotive vehicles includes a mechanism for causing a wiper blade assembly to swing, relative to the wiper arm, between an extended position of the wiper blade assembly and a retracted position of the wiper blade assembly. More specifically, the mechanism causes a link, which is attached to the wiper blade assembly, to swing as the wiper arm moves into and out of the hidden park position. A first embodiment includes a "four-bar linkage" which transfers to oscillatory movement of a drive arm of a wiper system to pivotal movement of the link over a limited range of motion of the drive arm corresponding to movement of the wiper blade assembly into and out of the hidden park position. A second embodiment includes a cam element which selectively engages a fixed pin over a range of motion of the drive arm corresponding to movement of the wiper blade assembly into and out of the hidden park position.
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