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Windshield wiper control apparatus

  • US 5,117,168 A
  • Filed: 12/19/1989
  • Issued: 05/26/1992
  • Est. Priority Date: 12/19/1988
  • Status: Expired due to Term
First Claim
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1. A windshield wiper control apparatus comprising:

  • a rain sensor for detecting a level of precipitation and for providing an output corresponding thereto;

    a wiper blade for eliminating matter to be wiped off, said matter being attached to an exterior surface of a windshield;

    a wiper driving means for reciprocating said wiper blade on said exterior surface of said windshield;

    an action status detecting means for detecting whether or not said wiper blade is in action and for providing an output signal corresponding thereto;

    a wiper control means for accumulatively calculating an accumulated amount of the precipitation on the basis of said output of said rain sensor and for outputting a signal commanding the driving of said wiper blade to said wiper driving means when said accumulated amount exceeds a predetermined threshold value; and

    a compensating means for reducing said accumulated amount to a smaller level while said wiper blade is in action as compared to while said wiper blade is stopped, in response to said output signal of said action status detecting means.

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