Windshield moisture sensor
US4831493A · kind A · utility
43Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S1/0877
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A moisture sensor to sense rain on a windshield. The sensor members on the outboard surface of the windshield are uncoated and directly exposed to any moisture accumulation on the sensor. Leads connect the sensor to an electrical signal generator and receiver and are insulated from each other to prevent direct electrical interconnection therebetween and subsequent shorting of the sensor circuitry. When moisture is on the sensor, the nature of a monitorable electrical signal passing through the sensor changes and is detected. In response to the altered signal, the windshield wipers are actuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.