Structure and method of sealing a closure assembly onto the neck finish of a plastic pressure container
US10259644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2017 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Oct 6, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/44
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic pressure container including a main body portion and a finish portion defining a mouth, the finish portion has an inner surface, an outer surface and an upper rim proximate the mouth. The inner surface has an inner undercut defined therein proximate the upper rim, and the inner undercut has a curved shape in cross-section. The outer surface has an outer undercut defined therein proximate the upper rim, and the outer undercut has a polygonal shape in cross-section. The inner undercut defines a first depth relative to an inner diameter D2 proximate the mouth and the outer undercut defines a second depth relative to an outer diameter D3 proximate the mouth. The second depth is different than the first depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.