Anti-vandalism detector and alarm system
US6150927A · kind A · utility
25Cited by
20References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Mar 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An anti-vandalism detection and alarm system is disclosed for detecting and reporting the scratching of relatively hard materials such as glass and plastic which generate characteristic sound or vibration frequencies during scratching, and for detecting and reporting the cutting and slashing of relatively soft materials such as fabric, leather and plastic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.