Improvements introduced in the assembly of links for folding umbrellas that are characterized in that according to the same, the linkage comprises a support rod, a receiving rod, a terminal rod and a connecting rod that are arranged in such a way that the being the open umbrella come to determine a quadrilateral, which receiver rod mentioned is mounted precisely so that in the said open position of the umbrella is maintained at approximately right angle with respect to the central tube thereof, being also characteristic, the fact that one or more vertices of said quadrilateral are sliding, and/or one or more sides of the quadrilateral itself are telescopic, thus allowing the extension of at least one side of the repeated quadrilateral. (Machine-translation by Google Translate, not legally binding)
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