Step ladder comprises front and rear parts joined to each other by hinge connection with each part provided with two rails and the front part being fitted with steps

摘要

The hinge connection has an axis (8) parallel with that of the steps and is formed for a further hinge movement with a further hinge axis (10) vertical to the axis of the steps. The further axis in the usage position forms an angle with the ground surface between - 25 degrees and +25 degrees. Stop device (9) are incorporated for limiting the further hinged movement. The hinge connection comprises a hinge moving in accordance with an axis parallel with the steps, which on the one hand is connected with the front part and on the other hand is connected with an auxiliary plate (9). Also a further hinge is connected on the one hand with the auxiliary plate and on the other hand with the rear part.