Extending step for mounting tram - has safety switch operated by lever below step to prevent retraction while occupied

摘要: Access to and from the tram is improved by an extending step (1) which swings out of profile under level lowest fixed (8). The supported on two sets pivoted levers (3,4) hold it in a horizontal, extended setting. It folds away into slightly inclined setting when moves off. linked safety lever (9) operates switch (11) inhibits retraction movement if occupied. reversed operated with partly retracted. reduces injury risk simple operate install.