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US 4,393,341 AGranted
Windshield cleaning system
AssigneeGulf & Western Manufacturing Company
InventorJames C. Byrne
Life of this patent
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AssigneeGulf & Western Manufacturing Company
InventorJames C. Byrne
Estimating the term…
A vehicle windshield cleaning system is disclosed which includes windshield wiper blades reciprocally driven by an electric motor, and an associated pump driven by an electric motor for dispensing windshield washing liquid onto a windshield to be cleaned. A manually positionable mode selector component in the electric control circuit for the blade and pump motors provides for selectively actuating the wiper blades in mist, pulse, low speed, high speed and wash modes. In the pulse mode, the blade drive motor is energized to intermittently oscillate the wiper blades through succeeding cycles with a time delay therebetween, and in the wash mode the pump motor is energized for a period of time which determines the amount of washer fluid dispensed onto a windshield. The control circuit includes a resistance-capacitance timing circuit operable in the pulse mode to determine the time delay between succeeding cycles of wiper blade oscillation, and operable in the wash mode to determine the duration of pump motor energization. The timing circuit includes an adjustable resistor, whereby both the time delay and the duration of pump motor energization can be selectively varied.
A windshield cleaning system comprising drivable windshield cleaing means including blade means and wash fluid pump means, first and second motor means for respectively driving said blade means and said pump means, motor control circuit means including power supply means and manually positionable means for connecting said motor means across said power supply means for providing a selected one of a plurality of selectable driving modes for said drivable means, said modes including a wash mode in which both said first and second motor means are connected across said power supply, said blade means and said pump means in said wash mode each having a corresponding operating period, said motor control circuit means including timing means operable in said wash mode for determining the duration of said operating period for said pump means independent of said operating period for said blade means in said wash mode, and means for adjusting said timing means for varying said duration of said operating period of said pump means in said wash mode.
A windshield cleaning system comprising drivable windshield cleaning means, motor means for driving said drivable means, motor control circuit means including power supply means and manually positionable means for connecting said motor means across said power supply means for providing a selected one of a plurality of selectable driving modes for said drivable means, said drivable means in each said driving mode having an operating period, said plurality of driving modes includes a wash mode and said cleaning system includes blade means, blade drive means connected to said power supply to drive said blade means, a reservoir means for holding a supply of fluid, pump means having a drive, an input and an output, said input coupled to said reservoir for receiving said fluid therefrom, said output for dispensing said fluid upon said windshield, pump drive means connected to said drive of said pump means connected between said power supply and a return for driving said pump drive means, and means interposed in the power supply connection for driving said pump drive means for varying the characteristics of said pump drive means independently of said blade drive means for varying the amount of fluid dispensed upon said windshield.
A windshield cleaning system including wiper blade means, first electric motor means for oscillating said blade means relative to a vehicle windshield, windshield washer fluid pump means and second electric motor means for driving said pump means to dispense washer fluid from a reservoir therefore onto said windshield, motor control circuit means including manually positionable means for connecting said first and second motor means to a source of power to provide a wash mode of operation in which said first motor means is operable to oscillate said blade means and said second motor means is operable to drive said pump means to dispense washer fluid onto said windshield, said motor control circuit means including means operable in said wash mode for changing the characteristics of said second motor means independent of said first motor means, and means for varying said characteristic changing means for varying the amount of washer fluid dispensed onto said windshield by said pump means.
Dependencies are inferred from the claim text.