| 摘要 |
The invention relates to a telescopically extendable and collapsible ladder assembly having a top ladder section, a bottom ladder section, and intermediate ladder sections, wherein a rung of the ladder sections is provided at each end with a spacer, which spacers are located at the top side of their rung and against a stile member of the adjacent upper ladder section, and at their top end have a slanted actuating surface, and wherein sliding automatic release actuators are provided, having a slanted actuating surface for interaction with said actuator surfaces of the spacers, such that, when a rung is moved towards the rung of an adjacent lower ladder section, the activation surfaces of the spacers first contact the actuating surfaces of the release actuators, pushing them into an unlocking position, and subsequently contact support surfaces of the adjacent rung, positioning the rung at an anti-finger pinching distance. |
