Abstract: A fitting for a corrugated flexible hose, of a type comprising two half-shells coupled at their respective end portions, characterized in that said half-shells comprise an inner surface including a plurality of ribs each adapted to engage in a helical groove formed on an outer surface of said corrugated flexible hose.

Abstract: A flexible hose for fuels comprises a rubber inner layer, at least a reinforcement fabric layer and a covering rubber layer and, moreover, at least a fuel vapor low permeability material layer. With respect to prior flexible hoses for fuels, the inventive flexible hose has the advantage that it drastically lowers the gas leakages through the flexible hose wall, so as to meet the requirements of the enforcing rules in this field.

Abstract: A tube for railroad pressurized air braking systems comprises a tube substrate made of a synthetic rubber, at least a reinforcement fabric material layer arranged above the substrate and a further synthetic rubber layer coating the at least a reinforcement fabric material layer, the tube comprising moreover at least a layer of a heat resistant material arranged above the synthetic rubber layer and coated by an outer synthetic rubber layer. With respect to prior braking system tubes, the inventive tube has the advantage that it can resist up to a free-flame temperature, i.e. a temperature of about 700-800° C., for a time of at least 15 minutes, while preserving its operating properties (such as a pressure resistance up to 5 atm).

Abstract: There is disclosed a flexible hose for supplying air to persons wearing diving suits or the like protecting garments and working in dangerous water or air environments, including data communication lines for transmitting and receiving voice and measurement data. The flexible hose comprises a tube like element in the wall of which there is embedded a metal coil thereon there are wound electric or telephonic cables which are embedded in a rubber layer and encompassed by an antitearing fabric layer and an antiabrasive rubber outer layer.

Abstract: An apparatus for the production of rubber tubes on elongate horizontal cores comprises two pairs of drive heads mounted on structures capable of displacement upwardly and downwardly with respect to corresponding fixed bases. Between the drive heads there is positioned a bed of predetermined length carrying, with the interposition of suitable cushioning means, intermediate stands for supporting the cores. Adjacent the said bed, on either side, there is a respective ground bar, positioned substantially at floor, level for supporting and guiding carriages which are movable parallel to the bed.

Abstract: A strip-dispenser carriage for use in the production of tubular elements by winding a flat strip helically onto a rotating core comprises a carriage frame having a slide slidably mounted thereon for displacement with respect to the carriage parallel to its direction of movement along the rotating core. The slide carries a flat coil of strip which is unwound from the coil to be wound on the core as the carriage moves along the length of the core. The relative movements of the slide, carrying the coil, with respect to the carriage makes it easier to maintain a constant winding pitch of the strip onto the core.

Abstract: Combined apparatus for performing the processes to which a rubber tube formed on a metal core must necessarily be subjected to after having been vulcanized comprises a bed constituted by a series of conveyor belts disposed in longitudinal sequence in a horizontal plane, onto which the tubes are individually placed after vulcanization. Along one side of the bed a carriage carrying a spool can be moved with the spool being driven to rotate by a slipping motor. At the two ends of the bed there are positioned header having forks for attachment to the cores on which the tubes are formed. By rotating the spool and simultaneously moving the carriage it is possible to unwrap and recover bindings from tubes of any diameter tidily, while by fixing one end of the metal core to one of the said headers and operating the said conveyor belts, the of finished tube can be released from the associated core.