Road surface ice detector and method for vehicles
US4274091A · kind A · utility
75Cited by
7References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jan 17, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Jan 17, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2401/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for detecting from vehicles the presence of ice on roads comprising means for generating a light pulse train whose amplitude is modulated in the presence of ice on the travelling surface, means for detecting modulation of the pulse train, and means for generating an indicating signal when a modulating signal is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.