Child-resistant closure with castellations
US5676268A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2401/15
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container neck and child-resistant closure for the neck are disclosed. The closure includes an inner part and an outer part, and castellations on the parts which mate when the outer part is displaced axially, to lock the parts together for rotation. A ratchet mechanism including ratchet ramps and cantilever leaf springs biases the inner and outer parts axially and rotationally apart, and allows relative rotation of the parts in one direction of rotation, when the castellations are not engaged. The angle through which outer part has to be turned to enable the castellations to be engaged may be less than 45.degree. and preferably less than 25.degree.. The closure may be moved between fully opened and closed positions by rotation through less than 360.degree. and preferably about 90.degree.. A tamper-evident ring, and a retaining means for retaining the closure in the closed position, may also be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.