Automatically armed vehicle anti-theft system
US5394135A · kind A · utility
Inventor
Key dates
| Filing date | Dec 15, 1992 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Dec 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/1018
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A motorized vehicle anti-theft system which is passive by being automatically armed (i.e., does not require a vehicle occupant to set the system). Once power has been turned on to the vehicle, detection of an attempt to start the vehicle motor or the opening of a vehicle door starts a predetermined time cycle. If a first reset signal is not received before the end of the time cycle, a vehicle disabling circuit is set. After that, a detection of actuation of the vehicle brake will cause the disabling circuit to only permit the vehicle engine to operate properly near the engine idling speed, and set off an alarm. Only proper generation of the first and a second reset signal will allow the vehicle to be operated properly again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.