Abstract: This invention relates to flexible high-pressure hoses of the kind having a wall made of elastomeric material which is strengthened by a stress-resistant reinforcement which is embedded in the wall and which is formed by at least two superimposed layers of cables inclined in opposite directions, with, at one end, an obturating or connecting device comprising a spigot which is inserted in the hose and an external clamping collar, the spigot and the collar having, on their adjacent surfaces, a channel in the one case and a corresponding ridge in the other.According to the invention, the channel and the ridge each have parallel clamping surfaces which are inclined in opposite directions and their radial height is substantially equal to or slightly greater than the thickness of the wall of the hose so that, in the state where the device is assembled to the hose, the crest of the ridge at least partly enters the channel.

Abstract: The present invention relates to vehicle tires of the kind having a crown belt formed from at least one pair of plies made of cords which are orientated in directions which intersect at small angles, and having sidewalls each reinforced by at least one strong half-ply making up a carcass which is interrupted under the belt.The invention which consists in a combination of the following features:(a) the tire has a low cross-section in which the ratio of height over width is less than 0.8, for example between 0.3 and 0.7, and,(b) the half carcass-plies are connected together in the area of the tire crown of the tire by a layer which has a strength of less than 50 daN per centimeter of width for an extension of 10% and whose elastic extensibility is at least 10%.

Abstract: A pneumatic tire is disclosed having a top belt under the tread, which belt comprises two superimposed plies made of cables having a high modulus of elasticity. The upper ply is narrower than the lower ply. Lateral strips, which are co-extensive with the circumferential length of the plies, are joined to each of the edges of the two plies. Each lateral strip is co-extensive with the ply to which it is joined and constitutes a layer of flexible circumferentially extending cables embedded in rubber and is joined end-to-end on a bias whose angle is the same as that of the respective plies to which they are joined.

Abstract: A pneumatic tire of low cross-section of a height to width ratio equal to or less than 0.8, and which is suitable for use at high speed. The tire has a radial carcass and a crown belt interposed between the radial carcass and the tire tread for the width of the tread surface, the belt being formed from two main plies of unequal width composed of high modulus flexible cords which are orientated in opposite direction at small angles, one at least of the plies having its lateral edges folded over and flattened against the inner face of the belt. A third, narrower, belt ply is positioned on the outer face of the belt against the central part of the ply whose edges are folded. The width of the third ply is between the width of the narrower and unfolded ply and the width of the space between the edges of the wider folded ply.

Abstract: A flexible support for supporting a conveyor belt of a conveyor having a frame. The flexible support includes at least one flexible element extending beneath a portion of the width of the conveyor belt, which flexible element is attached in the region of the ends thereof to the frame of the conveyor. The length of the flexible element is greater than the linear distance between the attached ends of the flexible element and the flexible element delimits support areas for supporting a portion of the width of the conveyor belt extending at least on opposite sides with respect to the longitudinal median plane of the conveyor. The at least opposite side support areas of the flexible element are responsive to the travel of the conveyor belt for being drawn in the travel direction independently of one another.

Abstract: A reinforced composite plastic material has a matrix of thermoplastic material in which is dispersed at least 5% by weight of a polyethylene having a very high molecular weight. The reinforcing polymer is in the form of fine particles which, in large proportion, are drawn out in the form of elongated fibrils which impart considerable strength to the resulting composite plastic material.

Abstract: A tire with a radial carcass and a top belt under the tread, has sidewalls which are reinforced by layers of a rubbery mixture exhibiting a high modulus of elasticity and extending over the entire height of the sidewalls. The upper edges of these reinforcement layers are inserted between the carcass and the lateral edges of the belt.

Abstract: A tire for a motor vehicle having a radial carcass and a top belt construction which includes a filler section in the lower portion or flange portion of each sidewall. The filler section is positioned between a portion of the carcass and folded over edges of the carcass and is comprised of a rubber material having a dynamic modulus at least about 200 kg/cm.sup.2 and a relatively low hysteresis or a loss angle on the order of from about 7.degree. to 13.degree..

Abstract: A flexible, homogeneous rubbery product comprising a matrix of a rubber selected from the group consisting of natural and synthetic elastomer in which there is uniformly dispersed at least 5% by weight based on the weight of the elastomer of a crystalline polyolefin whose molecular weight is equal to or greater than 500,000. A substantial proportion of the polyolefin is in the condition or form of fine particles which are drawn out in the form of elongated fibrils having a diameter smaller than 5 microns. This product exhibits a very high resistance to elongation in at least one direction.

Abstract: A shock-absorbing buffer for boarding fenders used for the protection of ships and waterway port structures has a hollow rubber body in the form of a tubular sleeve with a thick wall subjected to compression-bending, and rigid mounting plates affixed to its extremities which are arranged parallel to each other and at right angles to an axis of revolution of the rubber body. The buffer also includes an annular radially extensible rubber element which contacts and encloses at least one of the extremities of the hollow rubber body. This rubber element is separate from the rubber body and is adjacent to the mounting plate at this extremity.

Abstract: A safety tire comprising a tread (11), spaced beads (12) and sidewalls connecting the beads to the sides of the tread by forming under the tread a central inflatable chamber, each sidewall comprising an outside wall convex towards the outside and an inside partition convex towards the inside delimiting between each other lateral chambers distinct from the central inflatable chamber, characterized in that said lateral chambers are filled with a flexible cellular material rendering the sidewalls suitable to support the load of the wheel with a limited sagging of the tire in case of the deflating of the central chamber.

Abstract: A transmission belt which has a portion possessing tensile strength that consists solely of a thin, flat strip (sheathing) and that contains no reinforcing cord or cable. This strip comprises at least two thin, superposed layers bonded together and consisting of a flexible elastomer or plastomer matrix reinforced with irregular, elongated fibrils dispersed in the matrix with a dominant orientation in the longitudinal direction of the strip such that the strip has a tensile strength of at least 20 kg/cm.sup.2 with 1% elongation.

Abstract: Sectional molds for tires wherein radially movable sectors are mounted in a permanent way on a fixed lower casing of the mold in such a way that the sections do not have to be lifted and pulled up with a movable upper platform, when the press of the mold is opening. The sectors are connected to the lower casing which supports them by connecting means such as linked struts that are operatively associated with the sectors, at the beginning of the opening of the mold, having at the same time a slight lifting movement parallel to the lower casing and a slight radial backward movement assuring the detachment of the sectors with respect to the tread of the molded tire.

Abstract: A low profile tire having a reinforcing belt, positioned under the tread of the tire. The belt is made up of at least two superposed layers of cord fabric, the lateral edges of which are folded together. The outer folded edges of one layer are wider than the inner folded edges of another layer so as to completely enclose the edges of the other layer while extending towards the median plane of the tire. The width of these outer folded edges are equal to or less than one quarter of the width of the belt.

Abstract: This invention relates to inflatable structures, that is to say, to an assembly of parts of which some at least are inflatable and joined one to another in such a fashion that the assembly assumes a specific rigid form after the inflation of the inflatable parts. In accordance with the invention, the inflatable structure comprises a plurality of inflatable enclosures joined together with pressure contact and these inflatable enclosures are located between two layers of flexible material to which they are fixed, placing the said layers under tension. Various shapes are described for the inflatable enclosures and the points of attachment of these enclosures to the upper and lower flexible layers may be the same where it is required to make a flat structure, or different where it is desired to make a curvilinear structure.

Abstract: A self-floating flexible pipe for use with off-shore petroleum installations, which includes an inner reinforced pipe for conducting fluids which is surrounded by a layer of cellular material for assuring permanent floatation of the pipe. In order to protect the cellular layer, an outer reinforcing sheathing formed of helically wound metallic cables embedded in a rubber layer is provided. These helically wound metallic cables are wound at a setting angle with respect to the longitudinal axis of the pipe in the range of 56.degree. to 68.degree. so as to minimize the effect of these armoring cables on the flexibility of the overall pipe construction. These armoring cables are also preferably resilient in a longitudinal direction, with preferred embodiments including undulated cables so as to further lessen the impact of these cables on the flexibility of the pipe. An outer covering layer of polychloroprene is provided on the rubber layer within which the cables are embedded for protecting this rubber layer.

Abstract: A rubber shock absorber for a mooring guard comprising a hollow rubber element of revolution having a generally truncated conical shape adhering to a base plate with an angle of inclination A of its conical wall in the order of 60.degree. - 85.degree.. The rubber element has a hollow section with an axial length H and a conical wall with a radial thicknes E so dimensioned that the outer diameter D of the small base of the rubber element at right angles to the hollow section is substantially equal to the inner diameter d of the large base of the section. In this arrangement, the conical wall of the rubber element operates essentially through bending and extension towards the outside under a crushing stress comprising an axial component and provides lateral stability to counteract the tangential components of this stress.

Abstract: A tire of the type having a radial carcass formed of meridian arcs or hoops of individual cords in which the ends of the individual cords are bent in the area of each bead, and are extended by portions that are circumferentially directed and juxtaposed with the like circumferential portions of the adjoining hoop in the form of longitudinal bundles which make up the reinforcing structure of the beads.