Abstract: Elastic support including at least two coaxial cylindrical sleeves (10, 20) linked together by an elastic material (3) in compression, the compression of the elastic material (3) being obtained by modifying the length of the midline of the cross section of one of said sleeves (10) in the direction which brings radially closer together the midlines of the cross sections of the two adjacent sleeves (10, 20); the sleeve (10) whose midline is modified has prepositioned longitudinal folds (11) uniformly distributed on the periphery.

Abstract: A variable elastic coupling assembly interconnecting a rod of a vehicle shock absorber and a structure to be damped in order to filter vibrations, comprises two rigid annular armatures, one of which is fastened to the rod, and the other to the structure. The armatures are bonded together through at least two elastomeric annular elements which delimit between them a closed space which is totally sealed with respect to the external environment, and which contains a gas phase and at least one liquid phase. The volume of the closed space is modified by the deformation under strain of the elastomeric annular elements.

Abstract: A flexible hose which makes possible the early visual detection of a malfunction, can have a structure which allows a localized deformation in specified zones. This structure can have a combination of at least one radial expansion zone, and at least one compensation zone, wherein a localized deformation can occur as soon as the leak pressure of the leaking fluid reaches a threshold value which is only a fraction of the operating pressure of the fluid being transported through the hose.

Abstract: Process for the manufacture of a flexible polymeric structure comprising a sealant barrier, consisting of a multilayer film a few microns thick, oriented longitudinally, in a continuous manner, whereby all of the components of said flexible structure are intimately bonded by a final heat treatment. Flexible polymeric structures manufactured according to this process. Application to the fields of the transport of all fluids and protection against external aggressive agents.

Abstract: Process for the manufacture of a flexible tubular structure comprising a sealant barrier, consisting of a monolayer film a few microns thick, oriented longitudinally, in a continuous manner, whereby all of the components of said flexible structure are intimately bonded by a final heat treatment. Flexible tubular structures realized according to this process. Application to the fields of the transport of all fluids and protection against external aggressive agents.

Abstract: A power transmission system for the transmission of power or the transmission of movement from a first device to a second device comprises an endless flexible belt for transmitting power from a first power driven device to a second device for receiving the power. Such a belt can preferably be a toothed belt, also called a synchronous belt, as used, for example, on internal combustion engines for the synchronous propulsion of cam shafts at the cylinder head, and which belt has a construction capable of withstanding the operating environment for which it is intended.

Abstract: A method for the manufacture of an elastic joint, which includes positioning an external casing member, an internal casing member and an elastomeric compound such that the external casing member surrounds the internal casing member, and such that the elastomeric compound is situated between the exterior surface of the internal casing member and the interior surface of the external casing member, and radially expanding an end portion of the internal casing member to thereby form an annular reinforcement on the end portion of the internal casing member, the step of radially expanding the end portion of the internal casing member being carried out by contacting a die member a plurality of times with the end portion of the internal casing member, the step of contacting the die member a plurality of times with the end portion of the internal casing member being carried out such that the force applied by the die member against the end portion of the internal casing member is exerted along different axes relative to

Abstract: An elastic joint with high filtering capacity and axial gap controlled by incorporated stops includes an elastic ring disposed between internal and external coaxial rigid elements, with an additional elastomer layer disposed at each end of the joint between an axial shoulder of the internal armature casing and a turned in edge of the external ring. Thus, a stop function in an axial direction, which stop function is due to the interaction of the shoulder, the turned in edge, and the elastomer disposed therebetween, produces a filtering rigidity from two to five times lower than the radial rigidity in an equilibrium position, which axial rigidity becomes progressively higher than the radial rigidity beyond the filtering zone when a significant axial force is applied to the joint. Such a joint can be used for motor vehicle suspension arms and in antivibration insulation of mobile or stationary equipment.

Abstract: Elastomeric rubber bearing for being connected between two bodies. The bearing employs an element having a series of resilient elements connected together by a series of interposed rigid elements. The thickness of the resilient elements and the width of the cross-section of the resilient and rigid elements vary in relation to the position of the elements.

Abstract: A connector for connecting pipes having an inner portion and an outer portion surrounding at least a part of the inner portion. The outer portion having areas of reduced diameter therein to form a housing or groove in the outer portion for a clamp.

Abstract: A controllable elastic connection device for providing antivibration filtering having two different rigidities in a vehicle suspension system includes a piezo-rigid tubular chamber embedded in an elastomer compound block that is elastically connected between two fastening armatures, whereby the piezo-rigid tubular chamber is expandable under the action of a hydraulic pressure to increase the rigidity of the connection and thereby block the transverse deformability by a ratio of at least three.

Abstract: A flexible transmission device for continuously variable transmissions comprises an endless flexible connecting element and a plurality of transverse links. Each link includes at least one groove into which is engaged the flexible connecting element. The links are, preferably, covered by a fabric, and the exterior surface of the fabric is for being positioned in contact with the flanges of the pulleys over which the belt is positioned and operates.

Abstract: A MacPherson Strut assembly, or the like, with a hydroelastic suspension attachment in which the attachment is formed by two thick membranes of elastomeric composition which enclose a liquid. This unit forms a hydroelastic cartridge in which a sliding flap, provided with sealing joints, can move within a rigid confinement cup. The flap itself is encircled by a liquid passage having a large cross section clearance which causes a high level damping of vibrations which result from the resonant movement between masses between which the suspension attachment is mounted.

Abstract: A windshield washer fluid heater, on the engine cooling circuit of an automobile, with an exchange coil 7 around a rigid internal tube 1 which connects the flexible hoses 2 and 3. The exchanger coil 7 is embedded in the polymer material constituting the external envelope element 6 of the flexible hoses 2 and 3. Application to the windshield washing devices of automotive vehicles.

Abstract: An internal combustion engine having a power generating device, and a transmission link connecting the power generating device to an accessory operated by the power generating device, the transmission link being tensioned by a tension adjusting device which elastically presses a tension pulley against the flexible transmission link by the electric deformability of a deformable parallelepiped solid constituted by a pair of elements formed of composite flexible strips held parallel, and separated, by the permanent fixing of their extremities in a bearing holder block and in an adjustable fastener, the flexible strips possibly supporting a means to modify the flexibility of the elastic tension device which may include a means to damp the vibrations of the flexible link.

Abstract: A kit for constructing an expansion joint for pipes includes a flexible sleeve and at least one flange, the sleeve for being anchored to the flange by a reinforcement bead of the sleeve which reinforcement head includes an articulated chain of interconnecting elements disposed within the bead, the interconnecting elements being rotatable about one another on an axis of rotation which is substantially parallel to the longitudinal axis of the flexible sleeve.

Abstract: An internal combustion engine having a power generating device, and a transmission link connecting the power generating device to an accessory operated by the power generating device, the transmission link being tensioned by a tension adjusting device which pivots, during tension relaxation, around an imaginary center of rotation, and during a tension increase, around a stop, such that the two elastic rigidities achieved for both rotations are in a ratio of at least two.

Abstract: A flexible transmission device for continuously variable transmissions comprises an endless flexible connecting element and a plurality of transverse links. Each link includes at least one groove into which is engaged the flexible connecting element. The links are, preferably, covered by a fabric, and the exterior surface of the fabric is for being positioned in contact with the flanges of the pulleys over which the belt is positioned and operates.

Abstract: A train of railroad cars having an articulated connection between adjacent railway cars which share a common truck. The articulated connection employs a connecting element having a series of truncated conical resilient elements connected together by a series of interposed truncated conical rigid elements. The thickness of the resilient elements and the width of the cross-section of the resilient and rigid elements vary in relation to the position of the elements.

Abstract: A flexible transmission device for continuously variable transmissions comprises an endless flexible connecting element and a plurality of transverse links. Each link includes at least one groove into which is engaged the flexible connecting element. The transmission element operates dry, without lubrication. The transmission stirrups, or links, of the transmission element are arranged around an endless core. The endless core is configured in the form of a V-belt. The endless core has oblique walls in contact with interior surfaces of the stirrups or links. The exterior oblique surfaces of the stirrups or links, are in contact with the flanges of the transmission pulleys.