Separation resistant slat connections for folding shutters
US5740850A · kind A · utility
Inventor
Key dates
| Filing date | Aug 6, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Aug 6, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/1588
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The opposite vertically elongated edges of a series of pivotly connected slats forming an accordion type folding shutter are provided with integral tubelike connector members. The slat integrally joins its outer member along a plane which is tangent to the outer surface of the outer member so that the extended adjacent pair of slats form a roughly ninety (90.degree.) degree angle when the shutter is extended. Thus, the forces of impact applied against the shutter is absorbed by the crushing of the outer member towards and against and then with the inner member, in engagement between the adjacent inner and outer member beads and the partial transmission of forces through the adjacent portions of the slats for resisting separation of the adjacent slats and penetration of the force applying object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.