Tamper-resistant envelope
US5788377A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Dec 26, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D27/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper-resistant envelope is disclosed which includes first and second panels joined to one another to define opposed side edges and a bottom edge of the envelope. Each of the panels have an upper edge which together define an opening opposite the bottom edge of the envelope for providing access into the envelope. The upper edge of the second panel extends beyond the upper edge of the first panel to define a panel extension. A layer of adhesive sealant material is disposed on an interior surface of the first panel adjacent the upper edge thereof for sealingly adhering to an interior surface of the second panel. The sealant material has adherent properties which are resistant to release at temperatures substantially below room temperature. The envelope also includes an adhesive sealing strip having a lower portion mounted to an exterior surface of the first panel and an upper portion positioned to sealingly adhere to the panel extension of the second panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.