Apparatus for forming a seam
US5813812A · kind A · utility
8Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Aug 6, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/17957
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chuck, for use in a machine forming a double seam joining a can body to an end wall of a can, has a hollow body portion 36 made of machinable material and an annulus 37 of harder material joined to the body portion to define a lower part of the side wall of the chuck. The annulus of harder material is preferably covered by an impervious continuous layer 38 of hard material such as titanium nitride, chromium carbide, iron boride or chromium boride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.