Hose structure
US4474217A · kind A · utility
21Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1982 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Aug 11, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L57/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Hose structure suitable for transport of highly abrasive media including at least two concentric tube layers of elastomeric material. The radially innermost tube layer material is of greater abrasion resistance than a tube layer radially outwardly thereof. A radially outer tube layer material is of greater resilience than that of the radially innermost tube layer. The tube layers may be made visually distinguishable, for example, by being of different colors, so as to serve as a wear indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.