Tablet dispensing closure for containers
US5927535A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Feb 26, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D50/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An improved child-resistant plastic safety closure for containers has a depending skirt on it for attaching the closure to the top of a container. The top of the closure has an opening through it, which extends over a major portion of the total area of the top. A lid with upper and lower surfaces is hinged at one edge of the opening in the top for closing the opening. Tongue-and-groove inter-engagement members between the lid member and the top, around at least part of the periphery of the opening, hold the lid closed in the opening. Diametrically-opposed, spaced-apart first and second fulcrum extensions are located on opposite sides of the opening a predetermined distance from the hinged edge of the lid member; and these fulcrum extensions are located below the lower surface of the lid member when it is closed in the opening. The fulcrum extensions protrude only a short distance into the space of the opening; and whenever a predetermined pressure is placed on the lid member in the region between the hinged edge and the first and second fulcrum extensions, the lid member flexes about a secondary hinge and raises the edge opposite the hinged edge above the top of the closure to perm…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.