Abstract: A hydraulic motor with propulsion members located between an eccentric cam associated with a shaft and a counter-element. The propulsion members consist of two elements slidable telescopically with respect to one another in the longitudinal direction and having annular bearing shoulders kept pressed against corresponding sliding-contact surfaces of the eccentric cam and the counter-element by springs. The resilient springs are located outside the propulsion members and are arranged between the annular edges and elements for mechanically retaining them.

Abstract: Apparatus for gripping, raising, orienting and transporting helicopters (2) in specially prepared areas or zones in particular on decks (1a) of ships (1), comprising a cross-piece (6) movable in a direction parallel to the longitudinal axis (X--X) of the ship in engagement with said rail (4), wherein the transverse arm (6b) of said cross-piece (6) has joined to it a substantially L-shaped frame (7; 107) and smaller arm (7a) movable relative to the cross-piece (6) in a transverse direction with respect to the longitudinal axis (X--X) itself through the action of associated actuating means (7c), the free end of said longitudinal arm (7a) of the frame (7) having rotationally attached to it a transverse member (9; 109) carrying at its opposite ends the devices (10) for gripping the main wheels of the helicopter (2).

Abstract: A device for gripping, guiding and moving wheeled-type helicopters, particularly on board ships, platforms and the like, comprising a pair of crossmembers (6) located parallel to longitudinal axis (X--X) of the vessel and capable of moving transversally to such axis, in engagement with corresponding means of transverse guidance (2) integral with the ship's deck (3), each under the action of appropriate means of operation (7,8a, 8'a), independent of one another, and of further means of movement (12, 13) parallel to the longitudinal axis of the vessel, in engagement with corresponding longitudinal means of guidance (1), there being also provided a gripping and lifting arrangement (10,100) integral with each crossmember (6) and capable of moving in relation to the latter in order to grip, lift and guide the helicopter after landing, irrespective of its relative position with respect to deck (3) and its orientation with respect to longitudinal axis (X--X) of the vessel, and to position it in alignment with at lea

Abstract: A modular structure for supporting and guiding tubes slidable in the vertical direction and carrying sensing, reconnaissance and transmission equipment for submarine towers, a frame formed by uprights and walls, which are longitudinal and transverse defining vertical compartments inside which the tubes supporting the equipment are slidable. The frame is secured to only the hull of the submarine via horizontal base elements which are integral with the bottom ends of the uprights and can be secured to corresponding flanges fixed to the hull of the submarine.

Abstract: A positive-action device for bringing about the rotary movement of a hatch, as a result of the traversing stroke of a shaft moving axially within a fixed structure, particularly in submarine turrets, includes an actuating component integral with shaft and moving with the latter in a direction parallel to the longitudinal axis of the shaft, and an articulated kinematic mechanism the upper end of which is hinged to hatch with an interposed flexible safety device and the lower end of which is rotationally integral with a regulating component rotating around the axis of a fixed pivot, there being associated with the regulating component a mechanism of bistable type for reliably maintaining the settings corresponding to the open and closed positions of the hatch, and end-of-stroke devices.

Abstract: A machine for gripping and handling underwater vehicles and the like includes a gripping device provided with a guiding member made integral at its upper end, an articulated member connected with a rod sliding inside a guide attached to a free end of a jib of the crane and with floats capable of maintaining the guiding member raised above the water in a preset position of the rod relative to the guide controlled by a sensor imparting movement to the jibs of the crane in order to maintain the gripping device in vertical position relative to the ship.

Abstract: A device for gripping, handling and transporting helicopters, particularly on board ships, platforms and the like, includes a pair of gripping units located parallel to a longitudinal axis of the vessel and capable of moving transversally to the axis and parallel to one of the respective transverse guides, and under the action of drive units which are independent of one another, and traversing units parallel to the longitudinal axis of the vessel, and connected with corresponding longitudinal guides, along which the former are guided under the action of further independent drive units upon cocking the helicopters wheels.

Abstract: The apparatus for the feed and control of the speed and torque of a hydraulic motor having variable swept volume according to this invention comprises a hydraulic feed device for the motor, adapted for supplying the required flow rate of hydraulic fluid under all conditions at the working pressure, a constant pressure hydraulic control circuit associated with the hydraulic device or devices for varying the swept volume fo the motor, adapted for modifying the swept volume itself in relation to the pressure of the hydraulic fluid supplied to the motor, and a flow regulator valve with proportional control, piloted by an electronic regulator generating a control signal for the valve and receiving the signal of a sensor of the rotational speed of the motor and a reference signal.

Abstract: The orientatable blocking unit for the support of structures on cylindrical elements is composed of a lower annular body, secured to the structure, in which the lower body there is present an upper annular body, coaxial with it in at-rest conditions, secured to an intermediate annular body by means of a pair of aligned, radial pins, which intermediate body is, in turn, secured to the lower annular body by means of a second pair of aligned, radial pins, perpendicular to the first pair. This permits, in operating conditions, the free orientation of the axis of the upper body with respect to that of the lower body. The upper body possesses an internal surface on which there are present a plurality of upwardly converging slide seats, in which there are slidably supported movable jaws, equipped internally with members for coupling by friction to a tubular column. Elastic members effect translatory movement of the jaws from a lowered, unblocking position to a raised, blocking position, radially gripping the column.

Abstract: A hinge assembly for barrier gates, sluice gates and the like attempted to be raised from beneath the sea, has a fixed portion mounted in a base which can be provided with a tunnel affording access to it and enabling a tierod to pull a replaceable body against this fixed portion. The body carries the movable part of the hinge and is provided with a rotating joint enabling compressed air to be delivered to the barrier.

Abstract: The device for the occlusion of the internal clearance of tubular foundation piles according to the invention comprises a plug, consisting of a shutter and a deforming ring cooperating with a deformation fixture capable to impart to the plug the opening position for its blockage within the pile, wherein the shutter consists of a cylindrical body which can be restrained by the deformation fixture, having close to its upper margin a plurality of axially oriented lamellar elements, which can be laterally deflected as a result of the insertion of the deforming ring into the cylindrical body under the action of the deforming fixture, going from a configuration with a smaller external diameter than the one of the rings previously fastened in the pile for this purpose, to a configuration with a larger diameter than the one of the same rings.

Abstract: A gripping and lifting clamp for pipes and cylindrical objects has an annular body equipped to be suspended and lifted. Inside the annular body is a plurality of jaws slidable on guides integral with the annular body and inclined converging towards the center downwardly. The jaws are connected by connecting rods to an axially movable common ring, carried by controllable actuating members adapted to bring the ring from a raised position to a lowered position, thereby determining, via the connecting rods, sliding of the jaws in the axial direction of the annular body on the inclined guides, between a raised, widened position and a lowered, closed position, in which the jaws come into contact with and grip onto the external surface of the pipe or cylindrical object to be lifted. The angle of inclination of the guides is such as to determine, due to the friction existing between jaws and pipe, the checking and support of the pipe itself by sticking friction.

Abstract: The quick-coupling connector assembly for pipes, piles or the like is constituted of a pair of half-couplers, male and female respectively, capable of being connected to the ends of the pipe to be joined. The male half-coupler possess, on its external surface, an annular raised profile capable of being coupled with a corresponding annular raised profile present on the internal surface of the female half-coupler close to its end, the female half-coupler being equipped, starting from its end, wih axial slits defining, along its entire surface, a plurality of outwardly elastically flexible lamellar elements, adapted to permit the fitting of the female half-coupler over the male half-coupler and the coupling together of the respective raised annular profiles. An axially movable ring is also provided, capable of being fitted over the female half-coupler and of being blocked in position for preventing radial deformations at the end of zone of the female half-coupler itself.

Abstract: The invention relates to a hydraulic motor of the type comprising a plurality of cylinder-piston units arranged radially about an eccentric cam made rotatively rigid with a rotating shaft. The cam has a pair of shoes which project axially from opposite sides thereof and engage in guides formed diametrically in a pivotable support and on a rotating shaft, respectively. The shoes engage with such guides to allow for a radial displacement of the cam and provide a rotary connection of the latter to the rotating shaft. The shoes have respective cylindrical cavities formed internally in perpendicular directions to the shaft axis of rotation, cavities which accommodate small pistons whose rods are stationary relatively to the rotating shaft.

Abstract: The device is comprised of an auxiliary annular element concentrically mounted on each piston end facing the spherical surface of the rotor. Each piston end is provided with an annular shoulder bearing against a matching annular shoulder formed on the inner periphery of the circular aperture through which the auxiliary annular element is mounted on the piston end. The same auxiliary annular element is also provided with oppositely disposed lateral flanges, in a position corresponding to the sides of the rotor, each having a respective recess which is open in the axial direction opposite to the corresponding side of the rotor and extending in the circumferential direction in an arc of a circle concentric with the rotor. Coupling rings disposed at the sides of the rotor, concentrically therewith, engage said recesses to hold the piston end in contact with the spherical surface of the rotor.

Abstract: A distributor for hydraulic motors, particularly radial-piston hydraulic motors, wherein an excellent hydraulic seal is provided in the area between the motor housing and the fluid distribution plate by the utilization of a tubular sleeve located in front of the distribution plate. At least two annular steps located on said sleeve which engage with corresponding annular steps on the housing provide such seal.

Abstract: The present invention relates to a control unit for a vehicle powersteering mechanism comprising a housing having an inlet for connection to a source of fluid under pressure, an outlet for returning hydraulic fluid under pressure to said source, a pair of ports for connection to a hydraulic servomotor the movement of which controls the steering of the dirigible wheels of the vehicle, a hydraulic motor provided with a rotatable element and a follower element in operative combination with a distributor valve means provided with at least one displaceable body, said combination being operable on rotation of a control shaft connected thereto to divert hydraulic fluid flowing from said inlet through said housing to said outlet to one of said ports, and thus to its associated chamber of said servomotor, via said hydraulic motor, the hydraulic fluid being exhausted from the other chamber of the servomotor to said outlet, via said other port.

Abstract: Asbestos sheets are delivered from a forming machine to a stacking station at which the sheets are interleaved with flat or corrugated patterns before passing on to a seasoning store. The sheets and the patterns are carried on respective trolleys which move along guideways and through a transfer mechanism to a stack forming station. An auxiliary guideway is mounted above the guideway for the trolleys which carry the mixed stack, this auxiliary guideway being disengageable from the trolleys, for example by separating the auxiliary guideway rails, to allow an elevator at the stacking station to lower the stack carrying trolley to floor level, the auxiliary guideway then being reformed to receive a further trolley upon which a stack is formed while the first stack-carrying trolley is removed at floor level, so that stacking of the sheets can take place uninterruptedly.

Abstract: The present invention relates to a control unit for a vehicle powersteering mechanism comprising a housing having an inlet for connection to a source of fluid under pressure, an outlet for returning hydraulic fluid under pressure to said source, a pair of ports for connection to a hydraulic servomotor the movement of which controls the steering of the dirigible wheels of the vehicle, a hydraulic motor provided with a rotatable element and a follower element in operative combination with a distributor valve means provided with at least one displaceable body, said combination being operable on rotation of a control shaft connected thereto to divert hydraulic fluid flowing from said inlet through said housing to said outlet to one of said ports, and thus to its associated chamber of said servomotor, via said hydraulic motor, the hydraulic fluid being exhausted from the other chamber of the servomotor to said outlet, via said other port.