WINDSHIELD WIPER SYSTEM, DRIVE ARM, TUBULAR MEMBER AND METHOD

摘要

This invention relates to windshield wiper system which utilizes a flexible drive arm (12) for withstanding bending loads applied to a wiper. The drive arm (12) may be made of a pull-molded composite material having a relatively low modulus of elasticity and a relatively high elongation factor. The flexible arm (12) twists in the presence a bending load and undergoes rapidly progressing elastic buckling when the bending load exceeds a predetermined amount.