ES435006A1 - Improvements in dual-effected hydraulic shock absorbers. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in dual-effected hydraulic shock absorbers, essentially characterized by the fact that they make it possible to vary the tare of the compression cycle of the shock absorber, obtaining two different compression loads by linking the variable volume chamber or interior chamber of the shock absorber with the annular chamber outside, through two groups of exhaust ducts, in addition to the conventional oil recovery ducts, each of the groups of exhaust ducts being governed by unidirectional valves tared at different pressures, with the particularity that the group of ducts lower pressure or weak, are provided with a blocking device capable of closing said ducts leaving as the only outlet to the oil expelled, to compensate the volume occupied by the piston rod, the ducts whose valve elements are tared at higher pressure or strong, the elem being constituted blocking, by an electromagnet, concentrically arranged between the internal chamber of variable volume, and the outer annular chamber, whose electromagnet axially activates the locking device closing or leaving free the entry of the lower pressure exhaust ducts. (Machine-translation by Google Translate, not legally binding)