DISPOSITIVO SENSORE PER IL COMANDO DEL MOTOR DI TERGICRISTALLO DI AUTOVEICOLI

摘要

1513669 Measuring moisture G GRASSMANN 1 Aug 1975 [17 Aug 1974 13 March 1975] 32266/75 Heading G1N A rain sensor has a first conductive element 1 and a second conductive element 2 having a plurality of teeth 3 projecting towards the first and the elements are mounted so that air may flow through the sensor past the elements so that rain carried in the air-flow varies the resistance between them. Preferably the teeth of the first sensor element each has a bevelled surface sloping towards the tip of the tooth for collecting precipitation. The mounting includes a support at the rear of the sensor for securing it to a motor vehicle. In an alternative embodiment both the elements are toothed.