Electricity: motive power systems – Automatic and/or with time-delay means – Moisture content or wetness
Patent
1984-01-26
1985-09-17
Shoop, Jr., William M.
Electricity: motive power systems
Automatic and/or with time-delay means
Moisture content or wetness
318443, 318444, 318DIG2, 15250C, B60S 108
Patent
active
045423253
ABSTRACT:
In an automotive windshield wiper control system, a rain sensor provides a rain condition-indicative signal useful in controlling the wiper in its intermittent operation mode. That signal is integrated to yield a value representing rain accumulation on the windshield, and when the integrated value exceeds a given threshold, the wiper is reciprocated once to clear the windshield. In order to prevent arhythmic wiper operation, the signal integrator is disabled during wiper operation so that the integrated value will not approach the threshold too soon after or even before the end of the preceding wiper operation cycle.
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patent: 4329631 (1982-03-01), Betsch et al.
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Australian Patent Abridgement--AU-B-51186/79--Raymond Noack.
W. D. Kraengel, Jr., "Delay Circuit Retains Dynamic Braking to Stop Coasting of Windshield Wipers", Electronic Design, vol. 27, p. 19 (Sep. 1979).
Fujisawa Koichi
Kato Masaru
Kobayashi Kyoji
Jidosha Denki Kogyo Kabushiki Kaisha
Nissan Motor Company Limited
Ro Bentsu
Shoop Jr. William M.
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