Device for manufacturing shells of mineral fibers
US4913764A · kind A · utility
2Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Dec 27, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/76
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the manufacture of insulating shells formed by a felt of mineral fibers wound around a mandrel, main pressing elements intervene as soon as the winding begins and remain in contact with the surface of the shell during the entire winding phase. Auxiliary pressing elements intervene only when the shell, during shaping, has reached a given outside diameter of, for example, 200 mm. The invention applies particularly to the insulation of conduits of small and average outside diameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.