Split die and die nib defined by the same
US6810712B2 · kind B2 · utility
9Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Aug 7, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C3/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A split die includes a plurality of die pieces which can be assembled into a die nib. The die nib defines a central wire forming passage which has a cross section of a substantially rectangular shape or a square. The cross section of the wire forming passage is progressively smaller such that the wire forming passage has a predetermined approach angle. Each of the die pieces has a passage segment of a generally triangular shape to partially define the wire forming passage. The die piece has a pair of side lines each passing a point on an axial center line of the wire forming passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.