Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-01-31
2009-06-23
Bugg, George A (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S438000, C340S603000, C340S604000, C324S658000, C324S664000
Reexamination Certificate
active
07551095
ABSTRACT:
A system and/or method for sensing the presence of moisture (e.g., rain) and/or other material(s) on a window such as a vehicle window (e.g., vehicle windshield, sunroof or backlite). In certain example embodiments, a plurality of sensing capacitors are supported by a window such as a vehicle windshield, the capacitors each having a different field and/or pattern. A sensing circuit outputs an analog signal that is based on and/or related to the capacitances of one or more of the sensing capacitors. In certain example embodiments, a switching circuit is provided in order to selectively switch between different sensing capacitors or combinations thereof (or even possibly antennas and/or bands), in order to change the sensing field being analyzed and/or change the feature being searched for. For example, in certain example embodiments, the switching circuit may selectively switch between: (a) capacitor(s) for detecting rain on an exterior surface of the window, and (b) capacitor(s) for detecting one or more of ice on an exterior surface of the window, mist on an exterior surface of the window, and/or moisture on an interior surface of the window.
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Bugg George A
Guardian Industries Corp.
Nixon & Vanderhye P.C.
Walk Samuel J
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