Tamper indicating closure assembly
US4984700A · kind A · utility
25Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Nov 17, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2401/45
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tamper indicating closure assembly for a removable closure cap includes a removable overcap which completely surrounds the closure cap, the overcap having a transparent window, and a rupturable membrane intermediate the closure cap and the overcap being exposed through the window. One portion of the membrane is secured to the closure cap and another portion thereof is secured to the overcap so that relative movement between the overcap and the closure cap causes an unsecured portion of the membrane to tear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.