Heatable vehicle window with different voltages in different heatable zones
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United States of America Patent
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May 11, 2004
Issued Date -
N/A
app pub date -
Sep 7, 2001
filing date -
Sep 7, 2001
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Abstract
A heatable vehicle window includes a bottom bus bar and a plurality of top bus bars. Voltages or electric potentials applied to the top bus bars are different, so that a first one of the top bus bars is at a given electric potential and another one of the top bus bars is at another electric potential (i.e., the voltages/potentials are offset from one another). The degree to which the top bus bar voltages/potentials are offset relative to one another is a function of the distance each respective bus bar is from the bottom bus bar across the heatable layer(s). Given a substantially continuous heatable layer(s), this can in certain example embodiments enable approximately uniform heating of the window (e.g., laminated vehicle windshield, laminated vehicle backlite, or laminated vehicle sidelite).
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