Abstract: An instantaneous signal applied to the inlet of the timing device is passed through a restrictor into a capacitance and the resultant rising pressure is compared with an adjustable-level reference pressure signal which defines the timing period. When the capacitance pressure exceeds the reference signal value, a comparison signal initiates the release of an obturator. The reference pressure propagates to the outlet of the device and produces the time-delay signal.

Abstract: The transition module is intended to be assembled with at least three action modules constituting a sequencer and comprises an elementary logical gate having two inputs and one output, two inputs for receiving the output signals of two predetermined action modules and directing the signals to the inputs of the logical gate, one output for directing the output of the logical gate towards a predetermined input of the third action module and a Y-duct for directly connecting the output of the third action module to a predetermined input of each of the first two action modules.

Abstract: The comparator for signals which are coded in a given number system and represented by a fluid pressure comprises a first and a second rigid block pierced by transverse ducts which are arranged in a row and to which is applied a fluid pressure representing respectively a first and a second input signal, at least one elastic membrane which separates the two blocks, a first and a second discharge duct pierced in the second block on each side of the transverse ducts, means actuated by the pressure representing the second signal so as to deform the elastic membrane and to permit propagation of said pressure in the direction of the two output ducts, and means actuated by the pressure representing the first signal in order to deform the elastic membrane and to prevent propagation of the pressure representing the second signal beyond the duct corresponding to the first signal.

Abstract: A pneumatic control device with programmed characteristic, particularly for a vehicle braking device, wherein it comprises a pilot reducing valve connected respectively to a source of compressed fluid supply, to the atmosphere and to a fluid outlet conduit terminating in a pneumatic control member, the reducing valve comprising members for controlling the passage of the fluid whose operation is connected with programming device whose characteristics are capable of being corrected by the use of applying different parameters.