| 摘要 |
A hinge for bulky bodies, e.g. steel pipe floats 20, 21 of a cage for sea fish, comprises at least one compressible spacer member 13 which separates an inner 12 and an outer 11 hinge element of non-circular cross-section so that their mutual pivotal movement can take place only by compressive deformation of the spacer member which by virtue of its compressibility sets a limit to the angular extent of the hinge action. Also disclosed is a fish cage comprising a closed floating framework of interlinked closed pipe lengths for supporting a walkway and a submerged fish net articulated together by hinges of the invention. The hinge makes the use of mild steel pipe lengths as floats economically feasible. <IMAGE> |
