Reinforced accordion-type folding shutters
US5472037A · kind A · utility
Inventor
Key dates
| Filing date | Mar 25, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Mar 25, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/146
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A reinforced, accordion-type folding shutter is formed of a substantial number of generally flat, narrow slats that are pivotally joined together, edge-to-edge, for folding and opening the shutter. The adjacent edges of the slats are formed with integral tubes extending substantially their full lengths, but with each of the tubes being notched to form relatively short, co-axially aligned, spaced apart loops. The loops of each pair of adjacent slat edges are interfitted and co-axially aligned and a rigid rod is extended through the aligned loops to form a hinge pin for pivoting each pair of slats relative to each other and, simultaneously, to form, with the surrounding tube loops, a rigid, composite reinforcing bar. A bar is formed at each of the adjacent edges of the slats so that a series of relatively closely spaced bars are formed along the width of the shutter. The bars reinforce the shutter against penetration by wind hurled objects or other forcibly applied impacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.