Electricity: motive power systems – Automatic and/or with time-delay means – Moisture content or wetness
Patent
1984-01-26
1986-04-22
Shoop, Jr., William M.
Electricity: motive power systems
Automatic and/or with time-delay means
Moisture content or wetness
318643, 318444, 318DIG2, 200 81R, 307 10R, 307118, 73170R, G01W 114, B60S 108
Patent
active
045845085
ABSTRACT:
A rain sensor for an automotive wiper control system detects rain conditions to produce a rain condition indicative signal. The rain sensor includes a vibrator, the outer surface of which is exposed to rain drops and which vibrates or oscillates at an amplitude and frequency corresponding to the energy applied by rain drops. The rain sensor is adapted to produce the rain condition indicative signals corresponding to the vibration amplitude of the vibrator. The vibrator is resiliently suspended within a sensor casing by means of a resilient member which is adapted to allow vibration of the vibrator as rain drops hit the outer surface and to absorb vibrational noises transmitted through the vehicle body. The resilent member simultaneously serves to waterproof the components within the sensor casing.
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"Electronic Engineering" vol. 52, No. 638, p. 21, May 1980.
Fujisawa Koichi
Kato Masaru
Kobayashi Kyoji
Nagamine Yoshinori
Nakajima Fumio
Jidosha Denki Kogyo Kabushiki Kaisha
Nissan Motor Company Limited
Ro Bentsu
Shoop Jr. William M.
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