Arrangement for operating a wiper

Details Arrangement for operating a wiper Arrangement for operating a wiper

1996-05-28

1998-08-04

Martin, David S.

Electricity: motive power systems

Automatic and/or with time-delay means

Moisture content or wetness

318444, 318DIG2, B60S 108

Patent

active

057898880

ABSTRACT:
An arrangement for operating a wiper includes a sensor for detecting a wetting state of a pane and outputting a sensor signal based thereon, an evaluator for receiving the sensor signal from the sensor, and evaluating the sensor signal, and an actuator for actuating the wiper, the actuator being actuated by the evaluator to produce one of a plurality of wiping modes, including a stage II wiping mode for heavy wetting conditions. The evaluator includes an evaluation stage for determining whether a degree of wetting corresponding to a stage II wiping condition occurs after a prolonged wiping break, for example after passing through a tunnel, and a processing stage. If a degree of wetting corresponding to a stage II wiping condition is determined to occur after a prolonged wiping break, the processing stage is actuated by the evaluation stage to cause a change-over to stage II wiping within a shorter time period than in a case where a prolonged wiping break is not present for a comparable degree of wetting.

REFERENCES:
patent: 3786330 (1974-01-01), Inoue et al.
patent: 4317073 (1982-02-01), Blaszkowski
patent: 4339698 (1982-07-01), Kearns
patent: 4476419 (1984-10-01), Fukatsu et al.
patent: 4916374 (1990-04-01), Schierbeek et al.
patent: 5059877 (1991-10-01), Teder
patent: 5252898 (1993-10-01), Nolting et al.
patent: 5319293 (1994-06-01), Levers
patent: 5453670 (1995-09-01), Schaefer
patent: 5694012 (1997-12-01), Pientka

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