Abstract: An improved wiper blade assembly is provided which has an arm member with links and blade holders pivotally and rotationally connected thereto. The links and blade holders supporting a blade member for wiping over a windshield surface. A positioning device is provided between the link and the arm to enable adjusting of the relative rotation between the link and arm. When the wiper assembly swings over the windshield, the contact angle of the blade is changeable to protect the windshield and extend the life of the wiper blade.