Deactivator for resonance labels
US5315096A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Feb 12, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10881
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The described device is part of a product theft prevention system and is used for deactivating resonance labels. It is intended for use in combination with a hand-held optoelectronic bar code reader (1), so as to permit the deactivation at the checkout of shops and stores of electronic resonance labels provided with a bar code and attached to products in a single operation and simultaneously with the determination of the bar-coded data. The deactivator has antennas (8, 9), which are located in a casing (11) fixable externally to the front end of the hand-held bar code reader (1) and which are constructed as ferrite antennas. As a result of the housing of the antennas (8, 9) and preferably all the high frequency-carrying parts (14, 15) of the deactivator in a separate casing (11), the deactivator can be used in combination with any random hand-held bar code reader, without any changes having to be made to the latter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.