Method for forming a hollow workpiece using a snake tool
US5323631A · kind A · utility
15Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1993 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Apr 16, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D25/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool device for supporting one or more walls of an elongated hollow member located in a recess of a die for bending said member over a surface of the die while said member is in a stretched condition. The tool device comprises a plurality of segments held together in a snake-like arrangement by at least one cable extending through the segments. Opposed ends of the cable are provided with means for connecting the cable to opposed clamp assemblies of stretch bend apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.