Wire drawing die and method of making
US7469569B2 · kind B2 · utility
2Cited by
12References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2004 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Dec 9, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C3/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a die comprising a die core (10) of a hard material and at least two pre-stressed rings (60, 70) of increasing diameter placed around the die core and methods of making and using the same. The die core (10) is held in place by a force generated through deformation of mating geometric features on the die and the rings (60, 70) of increasing diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.