Abstract: A method of making a tubular casing for an underwater device, wherein a metal ring made of aluminum is subjected to an anodizing process that produces an insulating layer of aluminum oxide that covers it externally. The ring is coupled with a mold that defines a cylindrical surface on which the following are deposited: first layers of carbon fiber to produce a first cylindrically-shaped tubular element in carbon fiber provided with an end portion that engages a first groove of the ring; a layer of syntactic material configured to transfer radial forces; and second layers of carbon fiber to produce a second cylindrically-shaped tubular element in carbon fiber that covers the syntactic layer and is provided with an end portion that engages a first groove of the ring.

Abstract: A structural element of a means of transport comprising a resistive heater for defrosting operations, wherein the resistor has conduction terminals coupled to respective terminals of a voltage generator adapted to cause a current flux through the resistor. The resistor includes one or more conductive paths of partially reduced graphene oxide or partially oxidized graphene configured to generate, when travelled by the current flux, heat by Joule effect.

Abstract: A wheel drive cart for a transporting and/or sorting system configured to tow a plurality of loading carts movable along a closed path, constituted by a first and a second rail parallel to each other, between a loading and unloading stations. The cart includes a pair of direct drive wheels without reducers, with each wheel including an electric motor having a stator, integral with a bracket hinged to a frame of the cart, and a rotor, a peripheral outward facing portion of which forms a cylindrical surface of the wheel designed to roll on a resting surface of a respective rail.

Abstract: A transportation system for objects, wherein a train formed by a plurality of carriages moves along a rail and transports objects, for example parcels. The train comprises first carriages, each of which is provided with a pair of first motor-driven rectilinear belts, arranged with their longer edges mutually parallel and perpendicular to the direction of feed of the train. The first carriages alternate with second carriages, each of which is provided with just one second motor-driven rectilinear belt arranged with its own longer edges perpendicular to the direction of feed of the train. The distance between an edge of a first belt of the first carriage and a facing edge of the second belt of the second carriage is greater than the distance between facing edges of the belts of the first carriage.

Abstract: A sealing ring for a seal assembly is described that comprises: a main body rotating about an axis; and a first surface, which is defined by the main body, extends transversely to the axis and is suitable for abutting against a further sealing ring in a direction parallel to the axis; the first surface comprises a plurality of grooves forming respective hydropads; the grooves are delimited by a first edge and a second edge facing one another; the first edge and the second edge delimit the grooves in a circumferential direction to said axis; at least one of the first edge and the second edge is shaped like an elliptical arc, which has coincident or separate foci; comprises first grooves and second grooves alternating with one another in a circumferential direction to said axis and staggered from each other in a radial direction to said axis.

Abstract: A transportation system for objects, wherein a train formed by a plurality of carriages moves along a rail and transports objects, for example parcels. The train comprises first carriages, each of which is provided with a pair of first motor-driven rectilinear belts, arranged with their longer edges mutually parallel and perpendicular to the direction of feed of the train. The first carriages alternate with second carriages, each of which is provided with just one second motor-driven rectilinear belt arranged with its own longer edges perpendicular to the direction of feed of the train. The distance between an edge of a first belt of the first carriage and a facing edge of the second belt of the second carriage is greater than the distance between facing edges of the belts of the first carriage.