Patent ID: 6931691
Filing Date: 2005-08-23
Classification: B60S,F16F

Abstract:
1. A wiper spring for applying additional spring force to a wiper arm of a vehicle wiper assembly having a spring loaded hinge connection with a drive arm of the wiper assembly to assist in maintaining a wiper blade on the wiper arm in contact with a surface of the vehicle to be wiped during use of the wiper assembly, the wiper spring comprising a length of spring wire having a first hook-like end portion at one end shaped to slide over the drive arm from one side and a second hook-like end portion at an other end shaped to hook over the wiper arm, the hook-like end portions at both ends of the spring wire being generally U-shape, each including a closed end, an open end opposite the closed end, and opposite sides, the first hook-like end portion being in a plane that is generally rearwardly and upwardly angled relative to the axis of an intermediate length of the spring wire and being on one side of the intermediate length with the open end of the first hook-like end portion generally facing the axis of the intermediate length, the second hook-like end portion being in a second plane that is generally perpendicular to the axis of the intermediate length of the spring wire and extending vertically and laterally relative to the one side of the intermediate length with the open end of the second hook-like end portion generally facing downwardly, and a downwardly angled bend in the intermediate length of the spring wire adjacent the second hook-like end portion, wherein the downwardly angled bend has a bend angle of approximately 15° to 25° relative to the axis of the intermediate length of the spring wire.