| 摘要 |
1430259 Yieldable post L SVENSSON 14 Aug 1973 [25 Aug 1972] 38444/73 Heading E1B A post for street lights or traffic direction signs which gives way upon transverse impact comprises a shell 3 and a number of longitudinally extending rods 1 each having a length substantially that of the shell connected to the shell, the connections between the rods and shell being breakable under a predetermined transverse locally acting load to break the co-operation between shell and rods and allow yielding of the post. The rods may be connected to the shell on either its inner or outer surface. The rods may be connected intermittently, e.g. by welds or mechanical connections or may be welded continuously to the shell. |
