| 摘要 |
This rung for ladders is provided to be secured at its ends to two sidepieces, and is characterised in that it comprises at said ends means allowing to secure the rung in a horizontal plane being arranged in different angulations with respect to the plane being defined by the sidepieces. Said securing means comprise an intermediary member between the sidepiece and the rung, this latter being arranged in a horizontal plane irrespective of the angular position of the sidepieces. On its side facing the rung end said intermediary member has a slightly tapered trunnion of circular cross-section fitting into an also slightly tapered pocket being provided in the rung end and also having a circular cross-section. <IMAGE> |
