Vibration noise suppressive rain sensor for a wiper control system
US4603316A · kind A · utility
15Cited by
7References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 26, 1984 |
| Grant date | Jul 29, 1986 |
| Priority date | — |
| Expiry date | Jan 26, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S318/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A wiper control system controls an automotive wiper in accordance with rain conditions. Rain conditions are detected by means of a rain sensor which has a vibrator adapted to vibrate at an amplitude corresponding to rain conditions. The vibrator is adapted to produce a sensor signal having an amplitude corresponding to its vibration. The vibrator vibrates at a resonant frequency outside of the audible frequency range and has adequate sensitivity for detecting rain conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.