Dual motor wiper control

Details Dual motor wiper control Dual motor wiper control

1992-04-13

1993-10-12

Ip, Paul

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

318444, 318DIG2, 318 54, B60S 108

Patent

active

052528979

ABSTRACT:
A motor vehicle glass wiper system includes first and second motor assemblies and respective first and second wiper blades. Each motor assembly is effective to move its respective wiper blade through a wipe pattern that is bounded by an outboard direction reversing position and an inboard direction reversing position. The wipe patterns of the first and second wiper blades overlap to establish an interference zone of potential wiper blade contact which is adjacent both inboard direction reversing positions and bounded thereby. A wiper motor control monitors a respective key position sensor for each wiper blade. The control energizes each one of the wiper motors to move its respective wiper blade to the inboard direction reversing position and back to the outboard direction reversing position each time the key position sensor of the other one of the wiper blades indicates a transition out of the interference zone thereby inhibiting interference between the wiper blades.

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