Tamper proof poster display device
US4519152A · kind A · utility
26Cited by
3References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Aug 8, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F15/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A theft proof poster display device having front and back extruded portions pivotally connected to one another to define a frame forming member. The front portion defines a generally u-shaped member having smooth surfaces and rounded non-convoluted corners and the front and back portions are biased together under spring compression rendering a poster frame which cannot be gripped with enough frictional force to open the frame. An opener tool with lever arm and an integral inclined planar wedge member is engageable with the front portion of the frame for opening the poster display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.