Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Roll type
Patent
1996-04-05
1997-03-18
Johnson, Blair
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Roll type
160235, E06B 908
Patent
active
056113838
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.
REFERENCES:
patent: 2804641 (1957-09-01), Zavada
patent: 3485287 (1969-12-01), Milbourne, Jr.
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