Reinforced roll-up shutter
US5611383A · kind A · utility
Inventor
Key dates
| Filing date | Apr 5, 1996 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Apr 5, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/1533
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roll-up shutter is formed of numerous, identical, horizontally elongated slats each having a pair of oppositely and downwardly extended hooks formed on its upper edge and a downwardly opening groove on its lower edge for receiving the hooks of the next adjacent slat. The lower edges of the walls forming the groove in each slat are bent inwardly and upwardly to provide inner channels. The pair of hooks of one slat are normally engaged within the corresponding pair of channels of the next adjacent slat. The hook and channel on one side of each slat are arranged at a higher level than the corresponding hook and channel on the other side of each slat. When the shutter is opened, to cover a window or doorway opening, the engaged hooks and slats, which extend substantially along the full width of the shutter, form horizontally arranged, bar-like reinforcements for the shutter. When the shutter is rolled-up, the slats pivot about the hook and channel engagements located at the inner curvature of the rolled shutter while the hooks and channels located on the outer curvature of the rolled shutters move apart to permit pivoting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.