Windshield wiper system having tubular member
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United States of America Patent
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May 29, 2007
Grant Date -
Apr 29, 2004
app pub date -
Oct 28, 2002
filing date -
Oct 28, 2002
priority date (Note) -
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Abstract
This invention relates to windshield wiper system and method which utilizes a flexible drive arm for withstanding bending loads applied to a wiper. The drive arm 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 twists in the presence a bending load and undergoes rapidly progressing elastic buckling when the bending load exceeds a predetermined amount.
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