Electronic combination lock security system
US5541581A · kind A · utility
39Cited by
9References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Jul 26, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7147
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic security system includes an electronic lock mechanism and an electronic key, each of which is provided with a microprocessor controller and a memory storing data including an ID code and encryption key codes. The lock microprocessor may either change ID codes stored in its memory or encrypt a seed number to be used for determining access to the lock. A novel combination dial electronic lock utilizes the electronic lock and key in association with a conventional combination lock dial to prevent rotation of the combination dial unless an authorized electronic key has been inserted into the electronic lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.