Abstract: A vehicle detector for installation on the surface of a multi-lane road, comprising at least a coaxial detector cable provided with a central conductor, a metallic cladding and a filler material between the cladding and the conductor. The coaxial detector cable comprises at least one region which is referred to as the active region and in which the filler material is mechanoelectric, and also comprises at least one adjoining region which is referred to as a neutral region and in which the filler material is neither mechanoelectric nor potentially mechanoelectric.

Abstract: The capacitive sensor comprises a sensor body which includes a housing, a conductive front surface and insulation means provided between the conductive surface and the housing; it also comprises a coaxial cable of the type shielded by a mineral insulator for the connection of the conductive surface to a device for measuring the capacitance of the system formed by the conductive surface, constituting a first capacitor plate, and a reference conductive surface which is arranged opposite to and at a given distance from the first plate and which constitutes a second capacitor plate. The body of the sensor is formed by an electrically open extension of the coaxial cable shielded by a mineral insulator in which the free end of the core constitutes the conductive surface, the extension of the sheath constitutes the housing, and the insulation means consist of a mineral insulator.

Abstract: A heating plate for use in a drying device for the drying of inked paper produced by printing apparatus. The heating plate is formed by a sheet of metal having a central rectangular portion which serves to receive the inked paper and whose larger dimension at least equals the width of the inked paper in a direction perpendicular to the transport direction of the paper. The two sides of the plate which are parallel to the larger dimension are folded towards the underside in order to form two holders which serve to receive heating elements of a type which is clad with an insulating mineral.