Windscreen wiper device with life span indicator
AssigneeFederal-Mogul Corporation
InventorGurdev Orjela
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Abstract
A windscreen wiper device comprising an oscillating arm and a frame connected thereto for receiving a wiper blade, which device includes a life span indicator, characterized in that said indicator is sensitive to water. The indicator can change its color in dependence on the length of time during which the indicator has-been exposed to water.
Claims15
A windscreen wiper device comprising an oscillating arm and a frame connected thereto for receiving a wiper blade, which device includes a life span indicator, characterized in that said indicator is sensitive to water, and wherein said indicator contains a water-soluble chemical substance.
Dependencies are inferred from the claim text.