Abstract: The present invention relates to a device 1 for measuring an electric current and is particularly well adapted to electricity counters. This device 1 comprises a primary conductor 2 having a general U-shape, said primary conductor comprising a core 16 substantially circular in shape centred on an axis C, said central axis, and two branches, said first 19 and second 20 branches and a secondary winding 6 sensitive to a magnetic field, said secondary winding being disposed between said first 19 and second 20 branch of said primary conductor 2. Said primary conductor 2 is a flat profile folded in a U, said first branch 19 exhibiting torsion 13 of an angle of 90° according to a first direction of torsion and said second branch 20 exhibiting torsion 12 according to an angle of 90° along a second direction of torsion.

Abstract: The present invention relates to a device 1 for measuring an electric current and is particularly well adapted to electricity counters. This device 1 comprises a primary conductor 2 having a general U-shape, said primary conductor comprising a core 16 substantially circular in shape centred on an axis C, said central axis, and two branches, said first 19 and second 20 branches and a secondary winding 6 sensitive to a magnetic field, said secondary winding being disposed between said first 19 and second 20 branch of said primary conductor 2. Said primary conductor 2 is a flat profile folded in a U, said first branch 19 exhibiting torsion 13 of an angle of 90° according to a first direction of torsion and said second branch 20 exhibiting torsion 12 according to an angle of 90° along a second direction of torsion.

Abstract: A sealing assembly designed to co-operate with a screw provided with a tightening slot by being mounted therein in such a manner that once said assembly is sealed the tightening slot is hidden in a manner that is not reversible except by destroying the seal, and further comprising a breakable drive suitable when the sealing assembly is subjected to a tightening action, for driving the screw in a tightening direction inside a receptacle provided for this purpose and for breaking once the screw becomes blocked, so as to prevent any loosening action being applied via the breakable drive.

Abstract: A device for detecting meter opening, the meter including at least a first structural element and a second structural element that are in a given position relative to each other when the meter is closed, said device comprising: a moving member connected to the first element and organized to take up a stable state or an unstable state as a function of the displacement of one of the structural elements relative to the other; holding means connected at least to the second element and co-operating with the moving member as a function of the displacement of one of the structural elements relative to the other, so as to hold said moving member in its unstable state and so as to enable it to go to its stable state; and detection means suitable for determining the state of the moving member and for emitting an opening signal when the moving member is in a predetermined state.