Speed alarm system for a motor vehicle
US4223297A · kind A · utility
11Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1979 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Feb 14, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P1/103
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A speed alarm system for a motor vehicle comprises a speed sensor, a plurality of comparators responsive to the vehicle speed and respective preset reference speeds, and a plurality of lamps responsive to the output signals of the comparators. The threshold values which are defined by said reference speeds, are stepwisely arranged to change the number of the lamps energized. The number of energized lamps varies in accordance with the difference between the vehicle speed and a reference speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.