Safety closure means
US3993208A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1975 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Jan 14, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D50/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Safety closure means comprising a container and a closure cap therefor, in which the container has a neck and a shoulder, which shoulder is formed with a pair of diametrically positioned locking lugs integrally formed therewith. The cap is formed of a thermoplastic material having a top end wall and a depending annular inner wall and a depending outer annular skirt spaced from the inner wall, with the inner wall of the cap having threaded means for engaging the neck of the container to secure the cap to the container in a closed position. The outer skirt of the cap has a pair of diametrically positioned radially extending locking lugs adjacent the lower end thereof integrally formed with said skirt, the cap locking lugs being adapted when the cap is rotated to cap closing position to pass inwardly of the container locking lugs and to be compressed radially inward during said passage, and as the cap lugs move past the container locking lugs the cap lugs will be released from their compressed state so that they extend outwardly beyond the engaging edges of the container locking lugs to lock therewith and prevent counter-rotation or unscrewing of the cap. The outer skirt of the cap is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.