Abstract: A Fluid turbine flow meter, including a measurement chamber, a turbine body that is displaced axially, as a function of the fluid flow rates, between a high position and a low position in the measurement chamber and having a rotation axis, a centering bearing for the rotation axis in the measurement chamber that has a longitudinal body with a longitudinal passage supporting and passed through by the rotation axis, the rotation axis pivoting by being held axially in the measurement chamber, by a first axial end stop in the high position and by a second axial end stop in the low position, the centering bearing having, in the longitudinal passage, at least two cylindrical longitudinal support centering walls for the rotation axis.

Abstract: The invention concerns a fluid turbine flow meter including a rotatable longitudinal body of a turbine equipped with longitudinal blades and regularly distributed support arms of the blades connecting the blades to the rotatable body of the turbine, where each blade has on the support arm a plurality of separate longitudinal thrust members the cross sections of which are adapted to receive the thrust of the fluid jet when the blade is active and to allow circulation of fluid between the thrust members when the blade is inactive.

Abstract: The invention concerns a fluid turbine flow meter including a rotatable longitudinal body of a turbine equipped with longitudinal blades and regularly distributed support arms of the blades connecting the blades to the rotatable body of the turbine, where each blade has on the support arm a plurality of separate longitudinal thrust members the cross sections of which are adapted to receive the thrust of the fluid jet when the blade is active and to allow circulation of fluid between the thrust members when the blade is inactive.

Abstract: A Fluid turbine flow meter, including a measurement chamber, a turbine body that is displaced axially, as a function of the fluid flow rates, between a high position and a low position in the measurement chamber and having a rotation axis, a centering bearing for the rotation axis in the measurement chamber that has a longitudinal body with a longitudinal passage supporting and passed through by the rotation axis, the rotation axis pivoting by being held axially in the measurement chamber, by a first axial end stop in the high position and by a second axial end stop in the low position, the centering bearing having, in the longitudinal passage, at least two cylindrical longitudinal support centering walls for the rotation axis.

Abstract: Inductive angular-position sensor, including a partially metallized disk that moves in rotation around its axis of revolution; and a stator that includes a primary coil and several secondary coils, whereby the secondary coils are arranged essentially symmetrically in pairs relative to the axis of revolution, so as to form one or more pairs of secondary coils, whereby the secondary coils of each pair are connected, on the one hand, to one another, in series and in phase opposition relative to one another, and, on the other hand, to the terminals of a measuring element that can generate an output signal that depends on the voltage at the terminals of the pair.

Abstract: Inductive angular-position sensor, including a partially metallized disk that moves in rotation around its axis of revolution; and a stator that includes a primary coil and several secondary coils, whereby the secondary coils are arranged essentially symmetrically in pairs relative to the axis of revolution, so as to form one or more pairs of secondary coils, whereby the secondary coils of each pair are connected, on the one hand, to one another, in series and in phase opposition relative to one another, and, on the other hand, to the terminals of a measuring element that can generate an output signal that depends on the voltage at the terminals of the pair.

Abstract: A measuring device for a liquid meter with oscillating piston comprises a hollow chamber pierced with two apertures and limited by a cylindrical side wall, a bottom and a lid; a piston enclosed in said chamber and held movably, along a partition wall about a well. This device further comprises at least one groove, made in the corners formed between the bottom and the side wall of the chamber or the well or the piston, that opens into the hollow of the chamber, in a space formed between the well and the side walls, and is designed to receive deposits of particles introduced into said device by the liquid to be metered. The device can be applied in particular to water metering. FIG.

Abstract: The invention pertains to a rotation gauge for a water meter register where the hydraulic part of the meter rotates a shaft whose revolutions are to be counted. At the other end of the shaft at least one magnet is driven by rotation by the shaft. Outside this hydraulic part, two flexible blade switches are mounted opposite the path of said magnet and connected to an electronic circuit which provides a register with metering pulses. The metering pulses are characterized by the fact that each of triggered by the closing of the first flexible blade switch and stopped by the closing of the second switch. The second switch is closed substantially in the middle of the period during which the first remains closed.

Abstract: A device of the antifraud sealing cap type in the form of a unit having: a covering skirt (5) provided on the inside face of its upper edge with recesses extended downward by hooks (9) able to engage in shoulder (3) of threaded lock nut (2) provided on the body of the meter; a ring with an inside vertical lip (10) whose pin (11) projecting from the collar come to be inserted in said recesses (8); and a cover (12) whose opening and closing hinge (13) is pivoted in an opening made on the upper edge of the skirt. The device is particularly useful for antifraud covering of water meters.

Abstract: A turbine for a multijet fluid flow meter having a planar disk mounted for rotation in the meter housing includes a plurality of vertical blades supported normal to, and by, the disk. A ribbed shaft carried by the disk drives a counter. The disk may include braking ribs on the upper or lower surface for slowing rotation of the disk when subjected to strong fluid flows. Various blade configurations are contemplated, and the turbine may additionally take the form of a duality of parallel disks interconnected by a plurality of blades normal to both disks.