Alliedsignal Inc.

Dave Buttery

Ronald Paul Rohrbach

Peter D Unger

Daniel E Bause

Gordon William Jones

Russell A Dondero

An improved windshield wiper system having a cumulative ozone indicator (20) disposed in proximity to a wiper blade (10) which gives a visual cue when the wiper blade (10) should be replaced. The exposure to a predetermined amount of ozone causes the indicator (20) to change its color and thus communicate to the vehicle operator that it is time to change wiper blade (10). Rather than changing color the indicator (20) can be a pop up device which can be observed by the vehicle operator. To allow a reaction with ozone but to prevent damage from contact with a liquid the indicator (20) is covered with a gas permeable and liquid impermeable material.

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Coventry, RI, United States of America

Dave Buttery