Electricity: motive power systems – Automatic and/or with time-delay means – Moisture content or wetness
Patent
1988-07-20
1990-01-30
Ro, Bentsu
Electricity: motive power systems
Automatic and/or with time-delay means
Moisture content or wetness
318444, 318DIG2, 15250C, B60S 108
Patent
active
048975850
ABSTRACT:
A moisture sensor for sensing ambient moisture in the vicinity of a window having a window wiper. The sensor comprises a plurality of spaced apart conductive strips having an exposed surface. The electrical resistance between adjacent strips is dependent on the ambient moisture. The sensor also includes means for repetitively removing the moisture from the exposed surface and in the region between the strips. The conductive strips are located at a position other than in the area of sweep of the window wiper on the window and at least one of the removing means and the plurality of conductive strips is coupled to the window wiper, whereby the at least one of the removing means and the plurality of conductive strips is actuated by the window wiper and operates in synchronism therewith.
REFERENCES:
patent: 2407215 (1946-09-01), Anderson
patent: 3649898 (1972-03-01), Inoue
patent: 4127763 (1978-11-01), Roselli
patent: 4317073 (1982-02-01), Blaszkowski
patent: 4463294 (1984-07-01), Gibson
patent: 4665351 (1987-05-01), Nyberg
patent: 4705998 (1987-11-01), Millerd et al.
Bell Marl J.
Millerd Donald L.
Mist-Defy'R, Inc.
Ro Bentsu
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