Closure having back-angled lugs
US6152315A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D50/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety closure providing a top wall, an annular side skirt depending downwardly from an outer periphery of the top wall and defining a lower end thereof opposite the top wall, an internal thread projecting inwardly from an inner annular surface of the side wall, the internal thread being disposed towards the top wall, and at least one lug projecting inwardly from the side wall inner annular surface, the at least one lug defining an acute angle with the side wall inner annular surface, the at least one lug having a substantially trapezoidal profile, the substantially trapezoidal profile having a base edge disposed parallel to a central axis of the side wall and coincident therewith, a lower edge projecting inwardly from a lower end of the base edge, an inner edge parallel to the base edge and extending upwardly from an innermost end of the lower edge, and an angled edge connecting an upper end of the inner edge with an upper end of the base edge, the base edge upper end being vertically above the inner edge upper end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.