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Wiper control system for automotive vehicle facilitated front and rear wipers

  • US 4,881,019 A
  • Filed: 04/29/1987
  • Issued: 11/14/1989
  • Est. Priority Date: 04/30/1986
  • Status: Expired due to Term
First Claim
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1. A control system for an automotive wiper system including a front wiper and a rear wiper, comprising:

  • a front wiper motor for driving a front wiper blade;

    a rear wiper motor for driving a rear wiper blade;

    a front wiper control circuit connected to said front wiper motor for producing a front wiper drive signal having a given frequency for driving said front wiper motor at said given frequency;

    a rear wiper control circuit connected to said rear wiper motor for receiving said front wiper drive signal, and for dividing the frequency of said front wiper drive signal by a given value and generating a rear wiper drive signal for driving said rear wiper motor;

    a vehicle speed sensor for producing a vehicle speed indicative signal having a value representative of the vehicle speed; and

    means, responsive to said vehicle speed indicative signal, for deriving said given value based on the vehicle speed indicative signal value.

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