Multilayer tube for automotive applications
US12259083B2 · kind B2 · utility
0Cited by
7References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 6, 2022 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Apr 6, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L59/143
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multilayer tube is provided for use in with transmission oil or heating and cooling fluid applications in motor vehicles. The multilayer tube has an outer layer comprising an aliphatic or an aromatic polyamide to provide protection from the outside environment; a middle layer of a lower cost material that comprises from 20-90% of the thickness of the tube materials; and an inner layer that has excellent resistance to transmission oil or glycol coolant and temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.