Method and apparatus for forming an elongate member into a predetermined shape
US4815308A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jan 20, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D11/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An extrusion former includes tension cylinders for holding an extrusion by its opposite ends under tension in jaws which are free to pivot in tangent relation as a centrally positioned die is urged against the extrusion to form it into a predetermined shape whereupon tension upon the extrusion is released, the hold by the jaws on the extrusion is released and formed extrusion is removed from the extrusion. A locking device locks the tension cylinders at the exact tangent position at which the extrusion is properly and completely formed to permit removal of the extrusion from the hold of the jaws without binding or kinking of the extrusion in the jaws caused by residual tension in the extrusion after forming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.