ES164981U - Servomotor with fluid pressure. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Fluid pressure servomotor, of the type comprising a mobile wall arranged alternately displaceable within a housing and constituted by at least two axially spaced members and functionally associated with a common hub, from which its total thrust is transmitted to a receiver external, defining said members of the moving wall, with the housing of the servomotor and with the fixed central partition contained therein, two interconnected sets of variable volume chambers, each of which includes a low pressure fluid chamber and a pressurized fluid control chamber, said hub including a valve operable from an external control member to connect the said control fluid pressure chambers with said low pressure fluid chambers or with a high pressure fluid source, in order to establish a pressure difference through the aforementioned members of the mobile wall, this is because each of the aforementioned members of the mobile wall is slidably supported on said hub, to which it transmits its thrust through a supporting surface which limits its relative displacement in one direction, while an opposite return spring drives the said member of the movable wall against a fixed stop, in the absence of said pressure difference. (Machine-translation by Google Translate, not legally binding)