Improvements relating to defensive constructions particularly for sea and river defence works

摘要

1,065,538. Subaqueous structural elements. H. VIDAL. March 24, 1964 [March 27, 1963], No. 12414/64. Heading E1H. A structural unit e.g. for the construction or protection of quayside walls, dams, groynes, cofferdams, river banks and landworks &c. comprises a longitudinal rod shaped element (4) Fig. 4. (not shown) carrying at least two spaced apart bodies (2). As illustrated in the Figs. (not shown) the element may be rigid or flexible and the bodies may be formed as spheres, cubes, discs, cones or polyhedra.