Child safety closure
US4053078A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1976 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Aug 18, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A child safe closure of the kind which is secured to a container by interengagement of locking lugs within locking recesses is provided with a sealing member which provides a moisture tight seal with an internal wall of the container. The sealing member has a sealing bead which is inserted deeply within the container opening to a location adjacent or below the lower ends of integrally formed locking lugs or recesses on the container to avoid any depressions made in the interior wall of the container during cooling of thicker cross sectional portions of the container wall. A tapered lead-in surface on the container guides and centers the sealing bead as it travels downwardly toward its sealing position. Preferably, the sealing member is in the form of a separable, flexible sealing fitment retained within the closure cap and formed with an annular flange connected through an annular transverse V-shaped web to a circular planar crown. An annular wall depends from the annular flange and has the peripheral sealing bead thereon. The crown of the fitment is compressed against the top wall of the closure cap to bias the locking lugs into locking relation with the recesses on the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.