Twist-off closure
US6006933A · kind A · utility
42Cited by
50References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Apr 23, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2251/205
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A twist-off closure for use with a bottle having a neck, a lip and a ledge 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 are T-shaped and include a cross arm extending adjacent to the free end of the stem. The cap is made from a steel sheet coated with tin and a varnish or lacquer layer with the edges of the cap being formed by pinch trimming so that a corrosion-resistant layer of tin substantially covers the edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.