ES164982U - Fluid pressure actuator. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Fluid pressure actuator, in particular a brake application actuator, of the type including a housing provided with front and rear walls, a displaceable and fluid-tight wall in said housing, defining, between the front and rear walls respectively, a fluid pressure chamber and a spring release chamber, a spring in the latter chamber, which operates on the displaceable wall to drive it in the direction towards said anterior wall, an actuator member centrally supported by said movable and axially extended wall towards the exterior through the anterior wall for functional coupling to a device to be operated after the expansion of said spring, the said fluid pressure device further comprising mechanical means for retracting said displaceable wall in the absence of sufficient fluid pressure and including a filleted member supported by the referred wall and axially extending backward therefrom, in the direction of the rear wall, a sleeve supported by said rear wall and extended axially forwardly to the interior of said spring chamber, the sleeve defining a cylindrical cavity provided with a rear end open and a bottom provided with a central opening through which the threaded member is received, and a nut in said cavity, applied to thread on said threaded member, characterized in that said nut has a rotating cylindrical outer bearing surface and slidably coupled to the wall of said cavity, being further provided with a receiving member of a tool, accessible through the open rear end of said cavity, to effect the rotation of the nut against said bottom in order to drag the member filleted and the sliding wall. (Machine-translation by Google Translate, not legally binding)