Flexible duct insulation having improved flame resistance
US6527014B1 · kind B1 · utility
20Cited by
14References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Jul 2, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1314
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A flame resistant insulation product comprises a fibrous mineral material that has been rotary fiberized, preferably a fibrous glass. The composition of the mineral material has a softening point of at least about 699° C. An insulated duct includes a tubular wall that defines a hollow interior for conducting a fluid, and a layer of the insulation product wrapped about the wall. The mineral material reduces the number of samples of the insulated duct failing the flame penetration test of a UL 181 Standard compared to the same insulated duct with a mineral material having a softening point of less than 699° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.