Staircase, has length-adjustable legs hinge-connected to platform, and locking unit provided between length-adjustable legs and platform so as to lock length-adjustable legs according to fixed orientation relative to platform

摘要

The staircase (1) has length-adjustable legs (3) that are hinge-connected to a platform (2) of the staircase. A locking unit (4) is provided between the adjustable legs and the platform so as to lock the adjustable legs according to a fixed orientation relative to the platform. The length-adjustable legs consist of two profiles (9, 10) that are connected by a transverse profile (13). The profiles (9, 10) include free ends (14) that are connected to the platform through hinges (15).