Abstract: Device for applying a strip (B) of a viscoelastic material to a receiving surface (S) in relative motion (R) relative to said device, comprising a feed means and an application nozzle (1) having a body (11), into which said feed means (2) emerges, and a head (12) at the end of which there is an outlet orifice (122) of elongate shape in the transverse direction to the direction of the relative motion when the device is operating. The head (12) of the application nozzle (1) is linked to the body (11) of the application nozzle (1) via an articulation (10) which can be deformed along an axis (AA?) perpendicular to the direction of application of the strip (B).

Abstract: In the method for producing a green tire blank, at least one stitching roller is applied to the blank with the use of a resilient roller support, and during each rotation of the blank, a set value of a level of pressure of application of the roller against the blank is made to vary between at least two non-zero values.

Abstract: A device for extruding a strip of rubber comprises a passage for forming the strip, which passage is defined by a rotary roller for forming and driving the strip. The device also comprises a shutter for shutting the forming passage, which shutter is deactivatable under the effect of the pressure of the rubber upstream from the shutter exceeding a predetermined threshold.

Abstract: The positive-displacement pump (10) comprises a pump body (12) delimiting a rubber pressurizing chamber (14), and a feeder (16) for feeding the chamber (14) with rubber. The feeder (16) comprises a worm (42) able to rotate about a main axis (X) with respect to the pump body (12) and an absorption body (50) that absorbs the pressure of the pressurizing chamber (14) and is axially secured to the worm (42). The absorption body (50) is distinct from the worm (42), and has a surface (54) delimiting the pressurizing chamber (14) and arranged axially in line with the worm (42).

Abstract: Device (1) for applying a strip (B) of a viscoelastic material to a receiving surface (S) in relative motion (R) with respect to the device, comprising a feed means and an application nozzle (1) at the end of which there is an outlet orifice (10). The outlet orifice comprises a front lip (11) and a rear lip (12). The rear lip (12) is connected to an applicator flap (2) by an elastic articulated joint (3) so that the applicator flap (2) applies pressure pressing the strip (B) onto the surface (S) when the device (1) is functioning.

Abstract: Device for applying a strip (B) of a viscoelastic material to a receiving surface (S) in relative motion (R) relative to said device, comprising a feed means and an application nozzle (1) having a body (11), into which said feed means (2) emerges, and a head (12) at the end of which there is an outlet orifice (122) of elongate shape in the transverse direction to the direction of the relative motion when the device is operating. The head (12) of the application nozzle (1) is linked to the body (11) of the application nozzle (1) via an articulation (10) which can be deformed along an axis (AN) perpendicular to the direction of application of the strip (B).

Abstract: A device for extruding a strip of rubber comprises a passage for forming the strip, which passage is defined by a rotary roller for forming and driving the strip. The device also comprises a shutter for shutting the forming passage, which shutter is deactivatable under the effect of the pressure of the rubber upstream from the shutter exceeding a predetermined threshold.

Abstract: A method of manufacturing a circumferential reinforcement for a tire, said reinforcement comprising at least one thread (9) and an elastomeric material (12), in which said thread and a strip (38) of said elastomeric material in the unvulcanized state are wound simultaneously onto a form (21).

Abstract: A semiconductor optical component is disclosed which includes a semiconductor material confinement layer containing acceptor dopants such that the doping is p-type doping. The confinement layer is deposited on another semiconductor layer and defines a plane parallel to the other semiconductor layer. Furthermore, the p-type doping concentration of the confinement layer has at least one gradient significantly different from zero in one direction in the plane. A method of fabricating the component is also disclosed.

Abstract: A semiconductor optical component is disclosed which includes a semiconductor material confinement layer containing acceptor dopants such that the doping is p-type doping. The confinement layer is deposited on another semiconductor layer and defines a plane parallel to the other semiconductor layer. Furthermore, the p-type doping concentration of the confinement layer has at least one gradient significantly different from zero in one direction in the plane. A method of fabricating the component is also disclosed.

Abstract: The invention relates to a semi-conductor optical amplifier comprising an active waveguide and a laser oscillator structure framing the active waveguide, characterized in that it includes at least one input for control of the gain at the threshold of the said laser structure to enable adjustment of the value of the amplifier's gain. This amplifier is intended to be used in an optical system which includes means of regulation capable of acting on the control inputs of the amplifier in response to the optical power of the carrier wave of an output signal to enable adjustment of the value of the amplifier's gain. This optical system makes it possible particularly to obtain power equalization of a signal at the entry to a telecommunication system.

Abstract: Sample grating distributed Bragg reflector laser, very widely matchable by phase variation, and a process for using this laser.This laser comprises an active section (32) and two sample grating sections (34, 36) placed on each side of the active section, respectively, each sample grating section comprising phase parts (48, 52) alternating with grating parts (50, 54), and means (62, 64, 70, 72) of injecting current into the phase parts and into grating parts independently for each sample grating section.Application to telecommunications by optical fibres.