Abstract: A storage device for optical media comprises a body defining an upper surface. A plurality of adjacent slots formed in the upper surface of the body extend in a first direction from the upper surface and define upper guiding cavities and lower engaging cavities. The upper guiding cavities guide optical media into the lower engaging cavities, which have openings to the upper cavities. The lower engaging cavities engage lower arcuate portions of the optical media. The lower engaging cavities independently support the optical media in the adjacent slots in a parallel relationship when the storage device is located on a flat supporting surface. The lower engaging cavities have a trapezoidal-shaped cross section. The upper cavities have a generally “U”-shaped cross section.

Abstract: A roll-up cover system includes a tarpaulin (30) having a fixed edge (30-1) and a free edge (30-2) secured to a winding shaft (31), in which the tarpaulin is of the double-membrane inflatable type (30a, 30b) and all or part of the unwinding of the tarpaulin is carried out by inflating the tarpaulin, the inflating pressure occurring in the tarpaulin unwinding the tarpaulin or contributing to the unwinding force. The roll-up cover system has particular application to horticultural greenhouses.

Abstract: The present invention relates to a roll-up cover system, comprising a tarpaulin (30) having a fixed edge (30-1) and a free edge (30-2) secured to a winding shaft (31), in which the tarpaulin is of the double-membrane inflatable type (30a, 30b) and all or part of the unwinding of the tarpaulin is carried out by inflating the tarpaulin, the inflating pressure occurring in the tarpaulin unwinding the tarpaulin or contributing to the unwinding force. Application particularly to horticultural greenhouses.