Ladder comprising extendable legs

摘要

A supporting element for an object includes a first leg member and a second leg member. The first leg member is axially movable relative to the second leg member for axially extending the support member. The first leg member includes a house slidably arranged for receiving the second leg member. The house includes a locking element having a locking position for locking the relative axial movement of the first leg member with respect to the second leg member, and an open position for enabling relative axial movement of the two members. A catch may be provided in the locking element. The catch may be tiltably movable within the house for alternately acquiring the locking position and the open position of the locking element. The catch may include a cavity receiving the second leg, wherein the cavity has a stopping surface engaging at least opposed perimeter parts of the second leg member in a locking position of the locking element.