ACTUATOR USABLE IN A FLUID UNDER HIGH PRESSURE

摘要

The present invention relates to an actuator usable in a fluid under a high pressure, e.g. on board a submarine operating at great depths. The actuator comprises in per se known manner a plunger, which is mobile by means of a spring and is held in place by a locking member. According to the invention, the plunger, its spring and the locking means are located within a frame which is filled with a second fluid, whilst a flexible skirt and two deformable sleeves enable the pressure of the second fluid to adapt constantly to that of the external fluid. Application to the release or jettisoning of ballast in a submarine.