Theft preventive apparatus and radio wave receiving signaling device
US5959532A · kind A · utility
29Cited by
10References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1463
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A theft preventative apparatus is used to detect an attempted theft of an object and produce an audible alarm when an antenna (22) in the apparatus receives a radio wave signal from a transmitter (0). The apparatus can be deactivated using a bar-like releasing tool (K) inserted into the housing. Attempted theft can also be detected using a length of electrically conductive wire (3) securable to the object to be protected. The ends (30) of the wire are mounted to the housing. Disruption of the electrical path, such as by cutting the wire or removing one of the ends (30) from the housing, causes the audible alarm to be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.