Die head with adjustable mandrel and method
US5674440A · kind A · utility
11Cited by
57References
46Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | May 5, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A die head for extruding an annular body includes a mandrel having a warp portion with a number of segments spaced around the circumference of the mandrel. Heat is selectively flowed to the segments to warp the mandrel and vary the position of a die pin on the end of the mandrel in a die bushing to control the thickness of the extruded body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.