F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
F15B13/00—Details of servomotor systems ; Valves for servomotor systems
F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
B—PERFORMING OPERATIONS; TRANSPORTING
B61—RAILWAYS
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
B61L5/04—Fluid-pressure devices for operating points or scotch-blocks
Dispositif de contrôle de la décélération et/ou de l'accélération d'un élément mobile suivant un mouvement alternatif rectiligne de va-et-vient, au voisinage d'au moins un des points morts de fin de course de l'élément mobile