Alarm for card operated locks with local reset
US6008726A · kind A · utility
5Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Mar 2, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B45/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An alarm device for a lock which provides a security system which displays unauthorized tampering with the lock. The device senses unauthorized movement of one or several elements in the lock and causes an alarm signal which may only be terminated by resetting the device by authorized operation of the lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.