Vehicular moisture sensor and mounting apparatus therefor

  • US 4,973,844 A
  • Filed: 07/10/1989
  • Issued: 11/27/1990
  • Est. Priority Date: 07/10/1989
  • Status: Expired due to Term
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First Claim
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1. A moisture sensing assembly for mounting on one surface of a window to detect and indicate moisture or other matter accumulated on the opposite surface of the window, said assembly comprising:

  • first and second emitter means for emitting radiant energy toward the window;

    first and second detector means for detecting and receiving radiant energy from said first and second emitter means respectively after reflection and refraction by the window and any accumulated moisture or other matter on the opposite surface of the window;

    radiant energy barrier means for preventing reflection of radiant energy from said first emitter means and the one surface of the window to said first and second detector means, and for preventing reflection of radiant energy from said second emitter means and the one surface of the window to said second detector means; and

    support means for supporting said first and second emitter means in spaced angular relationship to said first and second detector means and said radiant energy barrier means on the one window surface;

    said support means including a window engaging surface for engaging the one window surface;

    said support means including means for spacing one of said emitter means farther from said support surface than the other of said emitter means and for spacing one of said detector means farther from said support surface than the other of said detector means;

    said radiant energy barrier means including a first radiant energy barrier extending between said first and second emitter means to a position aligned with said support surface and a second radiant energy barrier extending between said first and second detector means to a position aligned with said support surface;

    said first and second radiant energy barriers adapted to engage the one window surface when said assembly is mounted thereon with said window engaging surface engaging the one window surface.

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