Laser speed monitor disabling system
US5793477A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Jul 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A disabling system for disabling a laser-based speed monitor of the type that transmits a monitor laser beam at a moving motor vehicle. The monitor laser beam transmitted by the speed monitor is detected when it arrives at the motor vehicle. In response to detecting the monitor laser beam, a warning is output by an annunciator to the motor vehicle driver and a jamming laser beam is transmitted toward the speed monitor. The jamming laser beam disables the speed monitor for a time period sufficient to allow the motor vehicle driver to reduce the speed of the motor vehicle. The jamming laser beam is transmitted by a laser transponder structured to be powered only by the vehicle battery. Plural laser transponders are coupled to a single annunciator to provide plural points of speed monitor detection and jamming without requiring plural annunciators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.