Threaded closure with liner
US4462502A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1982 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Jul 22, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/0435
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A closure for fitment to the threaded neck of a container is disclosed. The closure is especially adapted for use in packaging products such as carbonated beverages. The closure has a circular top wall and an annular skirt downwardly depending therefrom. The skirt carries about its inside surface a closure thread for cooperation with the neck thread of the container. A circular, flexible, resilient liner is positioned against but rotatable with respect to the inside surface of the top wall and has a diameter greater than the outside diameter of the container lip which defines the container mouth. There is provided an annular projection which is located adjacent the inside intersection of the top wall and the skirt. This projection has a configuration whereby it presses the liner on the outside edge of the container lip to form a gas-tight seal when the closure is fitted onto the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.