Unit dose blister package with keyhole assisted opening feature
US6352158B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Jul 6, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2575/3227
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A child-resistant blister package for unit dose products, e.g., medicaments, composed of a blister layer and a cover layer. The blister layer formed of a planar material, e.g., thermoformable or cold-formable webstock, and has plural intersecting perforated line to form plural cells contiguous with the perforated lines. Some or all of the cells of the blister layer have a peripheral planar flanged portion and a blister portion projecting from the flanged portion to form a cavity in which the unit dose product is located. The cover layer is formed of a planar material, e.g., aluminum or other metal foil in either a single layer or laminated, and has plural intersecting perforated line to form plural cells contiguous with those perforated lines. Each cell of the cover layer is the same shape and size as a corresponding cell of the blister layer. The cover layer is fixedly, e.g., adhesively, secured to the blister layer along the flanged portions, with the perforated lines of each being aligned and with the cells of the cover layer being coincident with the cells of the blister layer. A keyhole shaped opening is provided in each cell having a cavity of the blister layer. Each keyhole …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.