Inviolability device for container having its neck closed by a screw cap
US4157765A · kind A · utility
12Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1978 |
| Grant date | Jun 12, 1979 |
| Priority date | — |
| Expiry date | Oct 24, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2251/0071
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An inviolability device which makes it obvious when a container with a screw cap has been opened for the first time. This device comprises a blind tube forming an extension of the neck of the container and being separated therefrom by a weakened zone. The blind tube is broken, at the weakened zone, by an inward driving thereof when the container is opened for the first time. The blind tube and the neck have similar threads thereon with cooperating threads in the screw cap. This device will find particular use in connection with flexible tubes for pharmaceutical or dietetic products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.