Theft detection apparatus and flattened wire target and method of making same
US5146204A · kind A · utility
13Cited by
19References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1990 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Dec 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/0488
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Items of merchandise (30) are protected from shoplifting or theft by affixing to them special responder targets (32), which are formed by drawing a material of high magnetic permeability into a thin wire and thereafter rolling the wire into a flattened strip and annealing the strip and severing the strip into individual lengths. The flattened strip may be positioned on an adhesively coated base strip (42) and covered by a peel strip (46). Slug-like deactivation elements (48) of hard magnetic material may be positioned along the strip for deactivating it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.