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
F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
F15B21/04—Special measures taken in connection with the properties of the fluid
F15B21/045—Compensating for variations in viscosity or temperature
Procede de regulation de securite pour limiter la temperature d'un fluide a une valeur superieure predeterminee et dispositifs pourla mise en oeuvre de ce procede