Water-drop-repellent mirror including a vibration plate and heating means
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United States of America Patent
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Oct 13, 1992
Grant Date -
N/A
app pub date -
Mar 22, 1990
filing date -
Mar 24, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A waterdrop repellent mirror provide a vibration plate which piezoelectric oscillator is affixed on the back side of the mirror, and a heater is placed therein to heat up the mirror surface. The piezoelectric oscillator on the rear surface of the mirror give ultra sonic wave vibration to the mirror through the vibration plate. When mirror surface resonate by inputting the vibration of the oscillator to the mirror, any waterdrop sticked on the mirror surface are dispersed. Re-sticked fine mist of waterdrop or frozen frost on the mirror surface can be removed by heated up the mirror, thereby clear mirror surface can be secured.
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