Vehicle key device
US4918955A · kind A · utility
26Cited by
18References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1987 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Oct 6, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7904
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a vehicle key device, when a key is inserted into a lock, the former is magnetically coupled to the latter so that data are transmitted therebetween, and only when the data provided by the lock and key correspond with each other is the driving of the engine permitted. This device positively prevents the driving of a vehicle by an unauthorized person.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.