Method of forming a flush-sided container
US4270475A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1979 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Jul 19, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D7/36
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A system of seaming a metallic end cover to a tubular composite can body utilizing a cover the diametric size of which is smaller than that of the can body. The smaller cover provides an annular space between the central depending cover pin and the surrounding portion of the body wall at the end thereof. The peripheral flange of the cover is inwardly folded about and with the flanged end of the can body to define a double seam. Simultaneously with the formation of the double seam, the seaming rolls, through direct engagement with the can body at and immediately below the seam, inwardly shape and contour the end portion of the can body, bringing the formed seam into the annular space and into direct engagement with the cover pin, necking the can body and providing a flush-sided container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.