Secure release apparatus for anti-theft fastening device
US4527310A · kind A · utility
40Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1983 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Jul 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5544
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The secure release apparatus is used with an anti-theft device having a member which is movable in response to an applied magnetic field. The secure release apparatus comprises a cover plate with an access opening and a permanent magnet structure which produces a concentrated magnetic field sufficiently strong to move the member. A tamper prevention structure is movable into a first position for preventing the member from moving into the concentrated field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.