Abstract: A device (100) for forming a complex product of a profiled product produces a complex product from non-protruding rubber layers. There is also a process for forming a complex product of a profiled product from non-protruding rubber layers, performed by the disclosed device (100). A tire production line can include at least one installation (500) having the device (100).

Abstract: A device (100) for forming a complex product of a profiled product produces a complex product from non-protruding rubber layers. There is also a process for forming a complex product of a profiled product from non-protruding rubber layers, performed by the disclosed device (100). A tire production line can include at least one installation (500) having the device (100).

Abstract: Device for measuring the rheological properties of a viscoelastic material, formed of an upper rotating plate (10) and of a lower rotating plate (20) which are able to press against the opposite faces of a sample S of the material to be measured. The axes of rotation (a1a1? and a2 a2?) of said plates are arranged parallel to one another in a direction perpendicular to the plane formed by the plates, and offset from one another by a distance d. Two independent motors (12, 22) drive respectively the upper plate (10) and the lower plate (20) at the same speed of rotation ?, without giving rise to any angular displacement between the two plates.

Abstract: The invention relates to a gear pump in particular for rubber mixes, comprising an enclosure in which rotates a set of gear wheels comprising a central gear wheel which cooperates with two other peripheral gear wheels, said pump comprising at least one feed chamber in which acts at least one feed means for delivering the material to said enclosure via at least one passage orifice, each of the gear wheels being driven directly by a driving torque and prestressing means between the teeth ensuring hermetic contact of the meshing zone of the central wheel with each of the two peripheral wheels.

Abstract: The invention relates to a volumetric pump, in particular for rubber mixes, comprising feeding means for delivering the material to an enclosure which opens into an outlet orifice and in which rotate two contra-rotating screws which mesh with one another by means of the respective helicoidal threads which they bear, the axial length of the meshing zone of these screws being greater than or equal to the total of the helix pitch of the threads and of the helix pitch multiplied by the number of threads of each screw multiplied by two.