Bottom die construction
US4524661A · kind A · utility
1Cited by
8References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1982 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Sep 3, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9447
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A bottom die provided with a cutting edge which is closed within itself used with stamping machines having a seat for the bottom die comprises a die body made up of at least two separate body parts adapted to be assembled together and forming an annular exterior die part with an internal die cutting edge. The body parts are separable along a parting line which is transverse to the die cutting edge. The body parts are held together by suitable means such as clamping screws.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.