Lid device for wide-mounted container and method of producing the same
US5054642A · kind A · utility
46Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Oct 24, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/14983
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A lid device for a wide-mouthed container comprises a metallic lid body having an inner margin defining an opening of a predetermined shape, and a closure member made of a soft synthetic resin for closing said opening of said lid body. The closure member is integrally formed with a pull tab used to open the closure member along a weakening line. The entire outer surface of the closure member is covered by a vapor impervious film, so that passage of water vapor through the lid device can be prevented even if the closure member itself is vapor pervious.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.