Method of manufacturing a heat-resistant resinous tube
US5433913A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Nov 19, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing and mass-producing a seamless heat-resistant resinous tube with a uniform tube wall thickness and circumference, which includes the steps of coating the precursor solution of a tube material to the surface of a core at a thickness greater than the tube wall thickness; passing a metallic die having a wider inside diameter than the diameter of the core along the outside of the core by utilizing the resistant force of the precursor solution without restricting the metallic die or the core, thus forming a tube around the core; treating the tube around the core to give it strength as a tube; and separating the tube from the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.