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Windshield wiper control system

  • US 4,131,834 A
  • Filed: 02/03/1977
  • Issued: 12/26/1978
  • Est. Priority Date: 02/13/1975
  • Status: Expired due to Term
First Claim
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1. An automatic control system for a windshield wiper mechanism driven by an electric motor comprising:

  • sensing means adapted to be activated by the presence of moisture and de-activated by the absence of moisture;

    capacitance means;

    a first electronic control means adapted to charge the capacitance means upon each activation of the sensing means;

    second electronic control means driven by the capacitance means and adapted to successively energize and de-energize the wiper motor following de-activation of the sensing means to produce an intermittent operation of the wiper motor which is sustained until the capacitance means are discharged, said first electronic control means also being adapted to energize the wiper motor continuously whenever and as long as said sensing means are or remain activated.

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