Tamper-evident drum closure overcap
US6360908B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1999 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Nov 19, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2251/0075
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A unitary, plastic, snap-on overcap for providing a tamper-evident capability to a closure assembly of a container includes a cap, a removable skirt, and a plurality of spaced-apart frangible elements which connect the removable skirt to the cap. The closure assembly includes an internally-threaded fitting which is anchored into the container and an externally-threaded closing plug which is installed into the fitting. The cap portion of the overcap includes a depending sidewall which terminates in a snap-on lip portion. The removable skirt includes a wall portion which is constructed and arranged to be positioned in close proximity to an upper surface of the container when the cap is snapped onto the closure assembly. The actual snap-on engagement of the cap to the closure assembly involves engagement by the lip portion with a cooperating edge of the closure assembly. In order to gain access to an edge of the cap in order to pry the cap off of the closure assembly, the skirt must be removed. In order to remove the skirt, the spaced-apart frangible elements must be severed. The tamper-evident capability is created by placement of the skirt in close proximity to a surface of the cont…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.