Infusion package and method of making same
US4290521A · kind A · utility
31Cited by
13References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1979 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Sep 10, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B29/028
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An infusion package that has a natural, expanded, unflattened or three-dimensional condition is folded to a flattened configuration to pack in quantity. The expanded condition gives greater internal volume by which infusion is improved and quickened. A pull string, affixed near the flattening folds, unfolds the package from its flattened configuration. To make the package, a tube can be formed into a generally tetrahedral shape by forming seams across it, each at 90.degree. to the preceding seam, severing the package so formed, and folding inward across one end seam to the tetrahedron to effect the flattening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.