Safety closure having an internal locking lug
US5988412A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Dec 17, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D50/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A cap having a top wall and at least one circumferentially extending sidewall having an inner surface with internal threads therealong and a terminating bottom edge of the sidewall defining an open end opposite to the top wall. The terminating edge is provided with an inwardly extending locking lug for engaging with an outwardly extending tab on a threadable neck of a container. The cap may be of double wall construction with an outer wall and an inner wall spaced therefrom wherein the threadable connections for the neck of a container are on the inner surface of the inner wall and the locking lug is on the terminating edge of the outer wall. A window is also provided along the terminating edge of the outer wall, the window being in visible alignment with the locking tab.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.