Container closure
US11148853B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 28, 2018 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Jun 8, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2517/0046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An automatic opening and closing device for a container comprises a closure flap within the container and a pivot arm with a weighted portion. When the container is in a first position, the centre of mass of the weighted portion is offset horizontally and vertically from the pivot point of the pivot arm and acts to bias the closure flap to close an opening in the container. When the container is rotated in a first direction to a second position, the weighted portion causes the pivot arm and closure flap to rotate relative to the container in a second direction opposite to the first direction, to bias the closure flap away from the opening. In the first position, the weighted portion is offset vertically by a greater distance than it is offset horizontally. A locking mechanism may also be provided, which is operable to the user to keep the container closed even when tilted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.