Multiple omega closures
US4665557A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1986 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Jul 22, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/3444
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An interlocking closure fastening device comprising a first closure element having an omega-shaped profile portion, and a second complementary closure element having a plurality of omega-shaped profile portions spaced to interdigitate with the first closure element and occlude with the first closure element. The profile portion of the first closure element is made from a stiff resin material, and is attached to a base portion made from a flexible resin material. The second closure element is made from a stiff resin material. The base portions of the second closure element are spaced from each other and interconnected by a flexible connecting portion. The closure device is adapted for use with reclosable plastic freezer storage and cooking bags.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.