Extensible ladder hand with development. (Machine-translation by Google Translate, not legally binding)

摘要

Extendable hand ladder with refinement, that having the ladder two sections, one fixed and the other mobile, is characterized by a device placed in the fixed section, which when folded (figure 2-b) the ladder does not interfere in any way (nor does it bother its slight rotation with respect to its axis) while, extending the mobile section of the staircase as much as possible (partially or completely: fig. 2-a), the device is manually moved by turning it slightly and while holding the step rung. Fixed, the corresponding step of the mobile section is also held by a wide notch (that marries it by its shape) located at one end of the device that i present. (Machine-translation by Google Translate, not legally binding)