Child-resistant blister pack
US6830153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | May 8, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2575/3236
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The child-resistant blister pack for unit dosage forms has a blister film sheet with depressions therein, unit dosage forms within the depressions and a lidding sheet which overlies the depressions and which is secured to the film sheet so as to seal the unit dosage forms within the depressions. A network of lines of weakness in the pack define a plurality of dosage units. Each dosage unit includes one of said dosage forms and a peel region where part of the lidding sheet is not secured to the blister film sheet. Each peel region is disposed adjacent a respective one of the lines of weakness. The lines of weakness include (a) a first line of weakness extending from a first access point so that, when the first access point is exposed, the blister film sheet and the lidding sheet can be torn along the first line of weakness to expose a second access point and to enable access to the peel region of the first dosage unit; (b) a second line of weakness extending from the second access point so that, when the second access point is exposed, the blister film sheet and the lidding sheet can be torn along the second line of weakness to expose a third access point and enable access to the pe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.