| 摘要 |
It comprises a core -1- formed by rigid sections -2- which alternate with flexible sections -3-, supplied with flexible strips -4-, -4a-, -7-, -7a-, which tend to recover their position when bent transversally along either of their larger faces. The bar also incorporates a covering formed by a layer of plastic material -9-, two tapes -10- and -11-, which are wrapped firmly around it, and which produce friction between the strips and the opposing faces of the core -1-. The bar bends transversally at the regions occupied by the flexible sections -3-. The presence of rigid sections -2- gives greater resistance to the bar, whilst the two tapes -10-, -11- provide the friction between the strips -4-, -4a-, -7-, -7a- necessary to keep stable the bends produced in the bar. <IMAGE> |
