Automatic device for actuation of components to clean a motor vehicle window
US4636698A · kind A · utility
37Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Sep 24, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S318/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automatic device for actuation of components for cleaning motor vehicle glass which includes a system for detection of the dirtiness of the glass, made up of a measuring photosensitive element receiving light directly through the glass and a reference photosensitive element isolated from any direct light and influenced only by the light transmitted through the interior of the glassing and an electronic circuit to receive and compare the responses of the two photosensitive elements and means to control the cleaning components automatically when the difference is response of these elements exceeds a certain threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.