Abstract: The present invention relates to a membrane for secondary air suspension of a land or rail vehicle, in particular of heavy truck or passenger wagon type, this secondary suspension incorporating it, such a vehicle which is provided therewith, and the method for manufacturing this membrane. This substantially toroidal membrane (103) comprises two attachment areas (110) and at least one corded layer (106) of fabric and/or metallic threads which is situated between two radially internal (104) and external (105) elastomer layers and which extends between these attachment areas. According to the invention, said at least one corded layer has its or each of its thread(s) individually sheathed by an elastomer sheath compatible with the internal and external layers.

Abstract: The present invention relates to a membrane for secondary air suspension of a land or rail vehicle, in particular of heavy truck or passenger wagon type, this secondary suspension incorporating it, such a vehicle which is provided therewith, and the method for manufacturing this membrane. This substantially toroidal membrane (103) comprises two attachment areas (110) and at least one corded layer (106) of fabric and/or metallic threads which is situated between two radially internal (104) and external (105) elastomer layers and which extends between these attachment areas. According to the invention, said at least one corded layer has its or each of its thread(s) individually sheathed by an elastomer sheath compatible with the internal and external layers.

Abstract: An encoder comprising a sleeve for holding on a shaft and an encoder element secured to the sleeve. The encoder element presents an encoding zone that is protected by a thin layer of material deposited by plasma directly on the encoder element and secured thereto, the thin layer covering at least the encoding zone A device including the encoder and a method of fabricating the encoder are described.

Abstract: A wheel rim, in particular for an all-terrain vehicle or a vehicle that is to run at low pressure, the rim including an anti-abrasion coating in at least one sensitive zone situated between the rim and the beads of a tire that is to be mounted on the rim, wherein the coating presents at least one sealing lip suitable for opposing penetration of abrasion particles between the rim and the beads of the tire.

Abstract: An encoder comprising a sleeve for holding on a shaft and an encoder element secured to the sleeve. The encoder element presents an encoding zone that is protected by protection means. The protection means comprise a thin layer of material deposited by plasma directly on the encoder element and secured thereto, the thin layer covering at least the encoding zone. A device including the encoder and a method of fabricating the encoder are described.

Abstract: A method of manufacturing an antivibration device for motor vehicles, the device comprising at least one metal insert having at least one fixing surface bonded to an elastomer, the method including a cleaning step during which the fixing surface is scanned with a laser beam that is sufficiently powerful to eliminate the impurities present on said surface.

Abstract: A method of manufacturing an antivibration device for motor vehicles, the device comprising at least one metal insert having at least one fixing surface bonded to an elastomer, the method including a cleaning step during which the fixing surface is scanned with a laser beam that is sufficiently powerful to eliminate the impurities present on said surface.

Abstract: A power transmission belt of the trapdezoidal type comprising a body made of an elastomer matrix having a layer of cord embedded therein, the cord being made of synthetic or natural textile material and serving as a traction strength member, the belt also including reinforcing members based on fibers extending substantially transversely relative to the belt. The reinforcing members (28) are rigid composite pins made of glass fibers coated in epoxy resin and they are disposed in the outside or back portion only of the belt, which portion is delimited by two side faces (22, 23) that are set back to avoid any contact between the reinforcing members and the cheeks (12, 13) of pulleys (11) with which the belt may cooperate.

Abstract: A power transmission toothed trapezoidal belt comprising a body constituted by an elastomer matrix having a layer of metal cables or of natural or synthetic material textile cords embedded therein for the purpose of providing strength in traction, and also having reinforcing members embedded therein extending substantially transversely relative to the belt, each reinforcing member having a cross-section which is substantially "open" in shape, being somewhat trough- or gutter-shaped, wherein said reinforcing members (21; 32; 33; 35; 36; 41; 51) are individual reinforcing members which are independent from one another, and wherein said reinforcing members are received in the gaps (20) between the teeth of the belt.

Abstract: A tensioner is provided for a power transmission belt comprising a return spring associated with the axis of a tensioner roller co-operating with the belt to control the displacement of said roller under the action of said spring with hydraulic type means for the dampening of vibrations generated in the belt. The spring is covered with an elastomer forming a sleeve closed at one of its ends by an obturator for defining said hydraulic dampening means which comprise at least one variable volume chamber filled with a liquid and closed at one of its extremities by a dissymmetrical valve device.

Abstract: A trapezoidal cross section cog belt comprising a rubber body having longitudinally spaced inner cogs, a longitudinally extending tension resisting girdle and transversally extending reinforcement members in said cogs, said members having a bandular open shape adapted to undergo deformation in the longitudinal direction of the belt when the same is in use.