System for preventing unauthorized operation of an automotive vehicle
US5254842A · kind A · utility
Inventors
Key dates
| Filing date | Dec 11, 1991 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Dec 11, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B49/006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The described system prevents unauthorized operation of an automotive vehicle under the control of a separable engine control module (10) and signal source or memory device (12). A wire scrambler (22) and interface module (24) are interconnected between the engine control module (10) and memory device (12). A key device (20) having a fixed coded signal source (53) on being received within a lock cylinder (26) energizes a crossbar switch matrix (44) in the interface module (24) which effectively provides a correct wiring relationship between the engine control module (10) and the memory device (12). Connector parts (16, 30) are secured together in a manner that would destroy connector contacts if separated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.