One-piece plastics closure
US4598835A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1984 |
| Grant date | Jul 8, 1986 |
| Priority date | — |
| Expiry date | Oct 22, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S215/01
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A one-piece plastics closure for a carbonated beverage bottle has a sealing ring (17) pivotally attached at the junction between its closure panel (10) and dependant skirt (11). The sealing ring is forked, having two annular and mutually divergent fins 20,21. The upper fin (20) is engaged by the free end of the container neck as the closure is fitted, and by pivotal movement of the sealing ring brings the lower fin (21) into sealing relation with the side surface of the container finish. The resilience of the closure material and the substantial deformation to which the sealing ring is subject thereafter maintain the effectiveness of the seal despite creep and backing-off of the closure which may occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.