Importance

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Abstract

A curtain for the window or skylight, etc., comprising a plurality of coiling sheets connected to each other in series is disclosed. One end of first coiling sheet is spliced to an adjacent end of the second coiling sheet in such a way that the said first and the said second coiling sheets coil together about the common axis which is the line of splicing of said two coiling sheets. The other end of the first coiling sheet is similarly spliced to the adjacent end of the third coiling sheet. A fourth and a fifth coiling sheets can be spliced to said second and third coiling sheets in the same manner and so forth. In the 'coiled up state' which is the retracted state of the coil curtain, the coil curtain is of the configuration of a series of rolls of the coiling sheets adjoining each other. When the coil curtain is stretched, each of rolls of the coiling sheets unrolls and the coil curtain extends wherein the residual coils of the coiling sheets left after unrolling plays the role of stiffeners keeping the coil curtain stretched laterally.

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First Claim