Inflatable attic stairway insulation appliance
US8590229B2 · kind B2 · utility
16Cited by
47References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Jan 16, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F11/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An inflatable insulator covers an associated attic access hatch to prevent a transfer of heat from a first indoor environment maintaining temperature control and a second indoor environment not maintaining temperature control. The insulator includes at least one air chamber adapted to contain a volume of stationary air. Impermeable layers define the air chamber. Sidewalls extending from a generally planar top wall to remove the impermeable layers from a direct contact with the access hatch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.