Closure with anti-backoff feature
US5292020A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 1993 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | May 13, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2251/205
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A backoff resistant closure for use with a container having a neck portion with container threads integrally formed thereon, the container threads having an uppermost portion. At least one protuberance is integrally formed on the inner surface of the annular skirt of the closure which projects inwardly. The protuberance is spaced from the uppermost segment of the closure threading and positioned between the uppermost segment of the closure threading and the inner face of the top portion of the closure. The protuberance is configured to abut and provide a frictional retaining force against the uppermost portion of the container threads. The protuberance will also retain a closure liner within the closure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.