Electronic article surveillance security system
US4573042A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1983 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Mar 14, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2434
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Apparatus for releasable attachment to articles to be monitored by a surveillance system of type involving radiant energy transmissions into an area of interest. The apparatus includes: an attachment device for effecting releasable attachment of the apparatus to an article and having an electrical switch with first and second states corresponding respectively to attachment thereof to the article and to release thereof from attachment; an alarm unit operable for generating an output indicative of an alarm condition; a receiver for receipt of radiant energy transmitted messages; and control circuitry connected to both the attachment device and the receiver for response to the attachment device switch second state and to messages received by the receiver for operating the alarm means to generate output indicative of an alarm condition. The apparatus may further include a negator unit for removing the alarm unit from generation of the alarm condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.