| 摘要 |
The present invention refers to a portable or hand ladder with a narrow body formed by two parallel rails separated one from each other by a couple of centimeters, where lateral sliding steps are mounted to said rails, where each step is a lever for two mobile parts that are adjusted to the rail and work upon exerting pressure in the step, the steps being separated one from each other a distance that allows the feet to be normally separated as when standing in firm ground. In the counterpart of the arrangement, the ladder forms a tripod with two additional posts an presents a high stability before movement even in the highest third portion thereof, the ladder having a hinged elbow arrangement, discrete in the lower portion thereof in the same side of the steps, which is positioned at ground level and the ladder in a vertical position for climbing without having another support point. |
