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) unifor...

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.

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 liqui...

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.

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.

Radial device for anchoring one end of a flexible tubular structure to a mating flange, characterized by a flexible tubular structure having a bead reinforced by an armature embedded in rubber, one-piece and rigid at the time of manufacture of the tubular structure but mechanically divisible into predefined segments at the time of the flexible tubular structure mounting, to allow the bead to bend so that it can slide into the bore of the rigid wall. The invention applies to any industrial assemb...

A device for temporarily shutting off conduits comprises an elastic or resilient sleeve expansible under powerful internal pressure, and having a rubber wall comprising at least two superimposed plies defining an internal tube and an external sheath, the cords of all the plies being crossed from one ply to another while forming angles smaller than 30.degree. with respect to the generatrices. According to the invention, the pair of outer plies constitutes a resistant carcass of the sleeve while t...

Pneumatic deicer with multiple inflatable chambers made of rubberized fabric in which all of chambers (10) or of a group of chambers are made of a double rubberized fabric on its outer faces which form two separate layers (14.1-14.2) which are connected along spaced linear areas (15) which are interknit from one layer to the other to delimit the juxtaposed tubular chambers, characterized by the fact that the interknit linear zones are oriented in the longitudinal direction of the tricot and this...

An expandible plug-like device is disclosed for insertion into a conduit for closing or sealing off the conduit. The device has a flexible and elastic hose that is reinforced by at least two reinforcement plies made of flexible metal cables. The hose is secured at least one end of the device by the reinforcement plies being locked or held by rigid closure elements. These elements include an inner support element, an outer support element and a bottom seal sealing element. The inner and outer ele...

A vacuum-operated mount for mounting an engine of a passenger or commercial motor vehicle which includes a variable volume chamber enclosed by a thick rubber encasement. The encasement is adapted to tolerate a force greater than the suspended engine under the effect of a moderated vacuum affected by controlling a connection of the variable volume chamber with two additional enclosures or chambers so as to increase or decrease a vacuum in the work chamber in order to create an accelerating force ...