Easy-open can lid
US4762245A · kind A · utility
14Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Mar 18, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/214
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A score line defining a portion to be opened is formed on a chromated surface treated steel plate coated with an epoxy type primer so that the score line is cut to the middle of the steel plate in the thickness direction thereof, and an opening tab is bonded and secured to the portion to be opened of the steel plate through a bonding fulcrum composed of a thermoplastic adhesive consisting of amide recurring units and/or ester recurring units so that the push-tearing top end of the opening tab is located on the score line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.