Electronic lock
US5089692A · kind A · utility
46Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1988 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Jul 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/00904
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention relates to an individual electronic locking unit of the type which is re-coded to the code associated with a new key means and at the same time makes the previously used code invalid by the introduction of a new key means having a new code. For the purpose of obtaining a favorable solution including simplified data communication, it is according to the invention suggested that the locking unit is adapted to accept key means from a number (N) of mutually independent code sequences (C), only one key means from one of said code sequences (N.multidot.C) being valid at a time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.