Process for manufacturing shells of mineral fibers
US4830808A · kind A · utility
4Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1985 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Nov 20, 2005 |
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 intervent only when the shell, during shaping, has reached a given outside diameter of, for example, 200 mm. The process applies particularly to the insulation of conduits of small and average outside diameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.