Fitment having removable membrane
US5915574A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1998 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Jul 23, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B50/84
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A fitment for use as a pour spout for a paper carton or flexible bag for liquids and powders has a flange which may be welded around a hole in the carton. A spout projecting outward from the flange is provided with a removable membrane integral with an inward projection positioned on the interior of the spout approximately midway of its height. Preferably the membrane is concave. A horizontally disposed pull ring is attached to the membrane by a connector so that pulling the ring removes the membrane by fracturing the tear line at the juncture of the outer edge of the membrane and the projection. A cap snaps over the spout and may be removed by unscrewing the complementary threads on cap and spout. A tamper-evidencing band frangibly connected to the lower edge of the cap skirt engages the exterior of the spout so that the cap cannot be removed without breaking the fragible connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.