Stamp unit
US6112662A · kind A · utility
5Cited by
13References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Jul 12, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41K1/50
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A stamp unit 1 is formed so that the circumference of the stamp material 3 is made as a slant surface 83 by heat-pressing both the lower end 4a of the holder 4 and the circumference of the stamp material 3. The lower end 4a of the holder 4 is formed in a wedge 82 so as to hook the circumference of the stamp material 3. Thereby the stamp material 3 can be surely retained to the holder 4, and the stamp material 3 and the holder 4 can be firmly sealed. As a result, stamping durability is remarkably improved when many stamping operations are repeated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.