Closure having an improved thread design
US6854614B2 · kind B2 · utility
21Cited by
14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2001 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Jan 16, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/045
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure for use on a container having an externally threaded neck is disclosed wherein an inner surface of a downwardly depending skirt portion of the closure cap includes a helical thread having a flat upper surface with a lower thread profile having a first depth greater than an upper thread profile of a second depth. The helical thread of the closure tapers into the sidewalk of the closure skirt. The closure is provided with a seal integral with the inner surface of the skirt, spaced from a top wall of the closure, and retained at a lowermost point along the downwardly depending skirt by a bead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.