Anti-theft tag
US4774503A · kind A · utility
57Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Jun 22, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5004
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There is disclosed a tag for use in an electronic article surveillance system including a housing, a detectable marker held by the housing, and a releasable magnetic lock. The lock, which cannot be defeated by deflecting the housing, securely grips a pin by means of opposed jaws. The jaws and a pair of leaf springs are constructed of a single piece of sheet metal. Magnetic biasing of the sheet metal overcomes the forces exerted by the springs and causes the jaws to open to release the pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.