| 摘要 |
A transition device for fitting to an extension ladder includes a single elongate rung portion and two hook-shaped arm portions at respective opposite ends of the rung portion. The hook-shaped arm portions have respective wing formations that project longitudinally from each end of the transition device 110. The hook-shaped arm portions are engaged over the uppermost exposed rung of the lower section of the extension ladder, so that the wing formations abut the uprights of the ladder and prevent movement or rotation of the device. The transition device 110 acts to increase the forward extension of the rung to enables a user to step safely over the transition between the lower and upper sections. |
