Improvements in the construction of rolling extensible platforms. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of rolling extensible platforms, of the type constituted by a stretchable side frame, characterized by the fact that the four square elements that form the stretchable frame on its four sides, are linked at their ends by means of section extensions in "U" on which they slide, the ends of which are provided with threaded end fixing pins with wing nut, which pass through holes made in said ends and run through slits slits that have fins laterals of the extensions, by means of which elements the two laterals facing each other are fixed at the appropriate distance, the said fixing pins being housed in respective containment bushes located between the two fins of the extensions. (Machine-translation by Google Translate, not legally binding)