Pressure container with differential vacuum panels
US8186528B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Sep 27, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2501/0081
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An improved blow molded plastic container having generally rounded sidewalls that are adapted for hot-fill applications has two adjacent sides and two pairs of controlled deflection panels, each pair reacting to vacuum pressure at differing rates of movement, whereby one pair inverts under vacuum pressure and the other pair remains available for increased squeezability or extreme vacuum extraction. The opposing sidewalls are symmetric relative to vacuum panel and rib shape and placement. The ribs and controlled deflection panels cooperate to retain container shape upon filling and cooling and also improves bumper denting resistance, decreases vacuum pressure within the container, and increases light weight capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.