Impact resistant window assembly for tornado door
US9528316B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2015 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Jul 31, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/015
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tornado door comprises a door body having spaced first and second exterior panels and a window panel sized to be oriented within an opening in the door body exterior panels. The door includes a plurality of S-shaped stiffeners spacing the interior sides of the door body first and second exterior panels and positioned about the periphery of the window panel forming a frame. A sealant establishes a seal between the window panel and the plurality of S-shaped stiffeners and between the window panel and the door body first or second exterior panel. The door further includes a cover ring placed on an exterior surface of one of the door body first or second exterior panels and juxtaposed with the plurality of S-shaped stiffeners. The cover ring and plurality of S-shaped stiffeners are intersecured using a plurality of fasteners which pass between the cover ring mounting holes through the door body first or second exterior panel and into the stiffener mounting holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.