Tamper-evident twist-off closure
US5263600A · kind A · utility
31Cited by
20References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1992 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Sep 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S215/901
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper-proof closure for use with a bottle having a neck, a lip, and shelf surrounding the neck and a plurality of ramp sections. The closure includes a top wall, a skirt and a plurality of tabs extending from the bottom edge of the skirt. The tabs include first and second side edges and a transverse edge. The tab is longer adjacent to one side edge than the other. The ramp sections include an upwardly sloping portion of the shelf and a cam wall extending across the shelf from the neck to the outer edge of the shelf.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.