Improvements in marine defenses of type in arco. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the arc-type marine defenses, which have a high energy of impact absorption, characterized in that the defense comprises a body formed of rubber or elastic material analogous to rubber and composed of a pair of side walls each having a great thickness and diverging in a main direction of action of the docking load, anchoring tabs provided at the diverging ends of said side walls and forming a single piece therewith, and an upper wall provided with a flat berthing surface and joining the upper ends of said side walls to each other and forming a single piece therewith, said top wall having a relatively large thickness and comprising means for interrupting the stiffness of said top wall longitudinally in its transverse direction and producing in the initial stage of action of the docking load the surface displacement of said upper wall towards that longitudinal zone in which the rigidity of said upper wall is interrupted, accompanied by a deformation in flexion of said side walls, and means for reinforcing both lateral edges of said upper wall by projections of said upper wall projecting outwards and which are attached to said side walls to increase the stiffness of said projections against bending, whereby in the final stage of action of the berthing load, deformation is produced by folding said side walls. (Machine-translation by Google Translate, not legally binding)