| 摘要 |
Moveable barrier to cover and uncover building window and the like to control thermal energy transmission. Barrier includes group of elongated hollow, slats mounted on tracks and connected by pivots. Slats form generally rectangular shaped moveable panel. Material of tracks and slats and the dead air spaces of slats form thermal barrier. Panel can be moved to cover and uncover area. Pivots provide for panel to be rolled up when moved to the uncover position.
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