Method for seaming can cover
US9073113B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2012 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Apr 27, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/44
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This method for clinching a can cover has a small diameter center panel formed from a center panel, ring-shaped reinforcing groove, chuck wall, and curled part in which the ratio of the center panel diameter and can cover diameter is 0.65-0.75. The chuck wall is provided with a first inclined part and a second inclined part that are inclined toward the outside. When a flange tip part of a can body and the curled part of the can cover are superimposed in a virtual horizontal plane, a lower end part of the second inclined part or a second curved part that connects the first inclined part and second inclined part is positioned in a position in a range of an angle of 0°-35° to a virtual horizontal plane passing through the center of the curve of a rounded part of the flange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.