Closure assembly for pressurized plastic beverage container
US5038952A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1989 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Dec 14, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D53/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure assembly for a pressurized, plastic beverage container having an upper end opening comprising: an annular container neck defining the container upper end opening comprising a radially extending top surface, an axially extending surface, and a lower, generally radially extending surface; a gasket positioned on top of the annular container neck; and a container cap comprising a flat central body positioned in covering relationship with the container opening and in abutting engagement with the gasket; and an annular flange includinngn an axially extending portion positioned in parallel, adjacent, noncompressive relationship with the axially extending surface of the container neck, and a generally radially inwardly extending portion positioned in abutting, compressive contact with the lower, generally radially extending surface of the container neck whereby upwardly directed axial force on the container cap produced by pressurization of the container is resisted by downwardly directed axial force applied by the lower, generally radially extending surface of the container neck to the generally radially inwardly extending portion of the flange of the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.