Abstract: A sensor module including a processing unit, a stroke sensor and a force sensor (3) for obtaining data relating to both a force exerted on an axially-moving rod (1) and the travel of the rod through a determination of the position of the piston (2) with respect to the rod (1). The sensor module is characterized by a first stationary electrical coil (5) that is arranged about the piston (2) and the rod (1) and a second moving electrical coil (6) that is disposed about the rod (1) and connected to the force sensor (3). The first (5) and second (6) coils are coaxial and as a result induced oscillatory voltage within the stationary coil (5) generates an eddy current within the piston (2) that permit a measurement of the stroke of the piston (2) by means of eddy-current signal received by the stroke sensor using the piston (2) as a test body, and supplying the force sensor with electrical power through the second moving electrical coil (6).

Abstract: This invention relates to a sensor module, comprising a processing unit, a stroke sensor and a force sensor (3), and capable of determining, inside the associated pneumatic servomotor for an assisted braking, data concerning both the force exerted on an axially-moving rod (1), and the travel of said rod (1), by the determination of the position of the piston (2) coupled to the rod (1).

Abstract: In order to solve the problem of the passing of an elbow piece (15) with a right-angle bend (16) through an opening (21) in a seal (19), said seal (19) is provided with a deformable slot (20). The tightness of the system, consisting of the seal (19) and the elbow piece (15), results from the existence of fir-branch shaped protrusions (27) on the base (26) of the elbow piece (15).

Abstract: A servobrake having a rigid jacket defined by a first shell joined to a second shell by through tie-bars to create variable volume front and rear chambers. The front chamber is permanently connected to a first pressure source whereas the rear chamber is selectively connected to the first pressure source and a second pressure source. The servobrake including a pressure sensor for the measurement of the pressure inside of the front and rear chambers. The pressure sensor is characterized by being attached to a front end of the through-tie bar whereas the tie-bar is characterized by a hollowed-out body with a hollow inner needle sealingly retained therein. The hollow inner needle defines a first chamber while a second chamber is defined by a space between the inner hollow needle and the hollowed-out body. The hollowed-out body has first ports therein for connecting the rear chamber with the first chamber through which pressure present in the rear chamber is transmitted to the pressure sensor.