Patent ID: 7127774

Claim:
A wiper arm assembly, comprising: a primary bow; two secondary bows with a claw on at least one end of each of said secondary bows: said claw arranged to hold and guide a wiper blade; said wiper blade arranged in a curved configuration, wherein when the wiper blade is held by the claws a force is exerted on said secondary bows in a longitudinal direction of the primary bow; said secondary bows rotatably attached to opposite ends of said primary bow about a pivot; said primary bow and said secondary bows arranged to contact each other by means of at least one projection extending from either said primary bow or said secondary bow, wherein said at least one projection exerts a force on said secondary bow in a longitudinal direction away from the primary bow so that vibration between said primary and said secondary bow is prevented; and wherein one of said at least one projections comprises two projections extending laterally from first end of said primary bow and another of said at least one projections comprises one projection extending longitudinally from the bottom of an opposite end of said primary bow.