Container having a base with a convex dome and method of use
US7287658B1 · kind B1 · utility
11Cited by
15References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2004 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Apr 20, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D79/0081
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A polymeric container for holding a fluid and a gas includes a specially designed base. The base includes an annular outer ridge connected to a convex dome by a flexible annular joint. During a hot fill operation, the structure of the base resists outward deformation. The top is then sealed. During the subsequent cooling of the container, the interior volume decreases forcing the dome upward toward the top of the container thereby reducing the tendency of the sidewall to inwardly collapse. In an embodiment of the invention, the sidewall of the container has a plurality of internally protruding diagonal ridges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.