Improvements introduced in graduable height sustainability mechanisms. (Machine-translation by Google Translate, not legally binding)

摘要

"IMPROVEMENTS INTRODUCED IN GRADUABLE HEIGHT SUSTAINABILITY MECHANISMS", which are essentially characterized by providing one of the two articulated elements of a track that acts as a guide to the upper end thereof, said track being arranged in the part lower surface to sustain; said upper end of the element in turn presents a projection, with the particularity that this end, and by means of said projection, is fixed in any position of its path by a moving part which extends into an external element susceptible of be actuated at will, this drive being transmitted to the part in question. (Machine-translation by Google Translate, not legally binding)