Anti-intrusion alarm device for automatic user actuation at an entrance to a structure
US5325085A · kind A · utility
4Cited by
7References
6Claims
0Family size
Inventor
Key dates
| Filing date | Apr 30, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Apr 30, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/0297
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An alarm device has an actuating member for energising the alarm, the member being placed in its actuating state by passive action on the part of the user in the case of an emergency. A preferred form of actuating member according to the invention is a ring pull, in which the alarm device is caused to operate by the ring pull being pulled away from the remainder of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.