Flexible coolant conduit and method of making same
US5850855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1996 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Feb 2, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/07
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flexible conduit for coolant having a high bursting pressure above 8 bar at 100.degree. C. and high hydrolysis resistance comprising an outer layer of a material selected from the group consisting of homopolyamides, copolyamides and mixtures thereof with an excess of amino terminal groups, a non-swelling inner layer made of a material selected from the group consisting of non-halogenated copolyolefins, non-halogenated homopolyolefins and mixtures thereof and a middle layer compatible with the inner and outer layers made of a homopolyolefin or a copolyolefin with grafted functional groups, the layers being coextruded and corrugated during coextrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.