Abstract: The present invention relates to a system for a parabolic solar concentrator (SCA) having a substantially continuous reflective surface aiming to maximize the efficiency of the parabolic solar concentrator and of its fabrication method. The system of the present invention allows the fabrication of a low cost parabolic solar concentrator, based on a torsion bar, ribs and a plurality of reflective pieces of sheet metal preferably covered with a reflective film. The parabolic solar concentrator according to a preferred embodiment allows the reduction of surfaces shading the reflective surface. Another advantage is the lack of presence of supporting or movement elements protruding in the concave side of the parabola, not including receiver tube components and supports, thereby increasing the reflection efficiency and solar collection.

Abstract: The present invention relates to a system for a parabolic solar concentrator (SCA) having a substantially continuous reflective surface aiming to maximize the efficiency of the parabolic solar concentrator and of its fabrication method. The system of the present invention allows the fabrication of a low cost parabolic solar concentrator, based on a torsion bar, ribs and a plurality of reflective pieces of sheet metal preferably covered with a reflective film. The parabolic solar concentrator according to a preferred embodiment allows the reduction of surfaces shading the reflective surface. Another advantage is the lack of presence of supporting or movement elements protruding in the concave side of the parabola, not including receiver tube components and supports, thereby increasing the reflection efficiency and solar collection.

Abstract: A ground power supply line for electric traction vehicles is provided with two conductors carried by a series of tiles aligned to one another; each tile has a conductive plate and a lower supporting structure, which is made of insulating material and accommodates electric connectors, normally open switches, and a control and command unit, which switches the switches for selectively electrically connecting the conductive plate to the conductors in response to a signal deriving from an electric traction vehicle passing over said external conductive plate; the upper surface of the conductive plates is flushed with the remaining part of a road surface.

Abstract: An airless vehicle tire, in particular for road vehicles, has a tread, which rolls on a road surface, and a reinforcing strip made of elastomeric material and for reinforcing the tread; the reinforcing strip being located inwards of the tread, being connected integrally to the tread, and having a number of adjacent blocks movable with respect to one another, and a circumferential forcing device for exerting force and a circumferential preload on the blocks.

Abstract: A tire (3) for vehicles, which does not require pressurization by means of a pressurized fluid, has a tread (16), two sidewalls (15), and two beads (8) attached to a wheel rim (2) and made of elastomer material; the tire is provided with at least one tubular reinforcement body (18) which is associated with the tread; each of the sidewalls have a respective homogeneous resilient annular membrane (24).

Abstract: A motor-vehicle is provided with an auxiliary cooling system, having a low temperature cooling liquid, entirely independent from the cooling circuit of the engine and including a radiator located at the front part of the motor-vehicle facing the radiator of the cooling circuit of the engine. The auxiliary cooling circuit comprises one or more auxiliary radiators which are connected parallel to the radiator of the auxiliary circuit and which are constituted by motor-vehicle body components.

Abstract: A ground power supply line for electric traction vehicles is provided with two conductors carried by a series of tiles aligned to one another; each tile has a conductive plate and a lower supporting structure, which is made of insulating material and accommodates electric connectors, normally open switches, and a control and command unit, which switches the switches for selectively electrically connecting the conductive plate to the conductors in response to a signal deriving from an electric traction vehicle passing over said external conductive plate; the upper surface of the conductive plates is flushed with the remaining part of a road surface.

Abstract: An airless vehicle tyre, in particular for road vehicles, has a tread, which rolls on a road surface, and a reinforcing strip made of elastomeric material and for reinforcing the tread; the reinforcing strip being located inwards of the tread, being connected integrally to the tread, and having a number of adjacent blocks movable with respect to one another, and a circumferential forcing device for exerting force and a circumferential preload on the blocks.

Abstract: A tyre (3) for vehicles, which does not require pressurisation by means of a pressurised fluid, has a tread (16), two sidewalls (15), and two beads (8) attached to a wheel rim (2) and made of elastomer material; the tyre is provided with at least one tubular reinforcement body (18) which is associated with the tread; each of the sidewalls have a respective homogeneous resilient annular membrane (24).

Abstract: The device is adapted to control the movement of a valve (1) of an internal combustion engine comprising a stem (1a) which may move in translation through an opening (2a) of a hollow guide body (2) and which ends in a mushroom head (1b) cooperating in operation with a valve seat (12) provided in a wall (13) of the engine head. The valve (1) may move in translation with respect to the hollow guide body (2) between a retracted position and a forward position in which the mushroom head (1b) respectively closes and opens the associated valve seat (12). The control device comprises an electromagnet (3) adapted, when energised, to retain the valve (1) in the retracted closed position, a first spring (7) associated with the valve (1) and tending to urge it towards the open position, and a second spring (8) also associated with the valve (1) and tending to oppose its transition into the open position.

Abstract: A tire for vehicles which does not require pressurization by means of a pressurized fluid has a tread, two sidewalls, and two beads which are attached to a wheel rim made of elastomer material, and is provided with at least one tubular reinforcement body which is associated with the tread; each of the sidewalls having a respective homogeneous resilient annular membrane, a straight generatrix of which forms an angle (A) other than 90° with the axis of the tire; the membranes being stretched radially between the tread and the beads such as to be pre-tensioned in the absence of external loads acting on the tire.

Abstract: A ground power supply line for electric traction vehicles is provided with two conductors carried by a series of tiles aligned to one another; each tile has a conductive plate and a lower supporting structure, which is made of insulating material and accommodates electric connectors, normally open switches, and a control and command unit, which switches the switches for selectively electrically connecting the conductive plate to the conductors in response to a signal deriving from an electric traction vehicle passing over said external conductive plate; the upper surface of the conductive plates is flushed with the remaining part of a road surface.

Abstract: The system controls the propulsion of a motor vehicle with a propulsion system (1) which includes an internal combustion engine (E) with a shaft (S) for coupling to a transmission (2). The system includes an accelerator (A) with an associated sensor devices (S1) for supplying electrical signals indicating the force (FP) applied on the accelerator (A) by the driver, and an actuator device (6) operable to alter the position of the accelerator (A).; sensor devices (S2) supplying electrical signals indicating the speed of rotation (n) of the shaft (S) and/or the vehicle speed (V); and an electronic control unit (SCU) operable to control the propulsion system (1) in dependence on the signals supplied by the sensor devices (S1) and (S2).

Abstract: The device is adapted to control the movement of a valve (1) of an internal combustion engine comprising a stem (1a) which may move in translation through an opening (2a) of a hollow guide body (2) and which ends in a mushroom head (1b) cooperating in operation with a valve seat (12) provided in a wall (13) of the engine head. The valve (1) may move in translation with respect to the hollow guide body (2) between a retracted position and a forward position in which the mushroom head (1b) respectively closes and opens the associated valve seat (12). The control device comprises an electromagnet (3) adapted, when energised, to retain the valve (1) in the retracted closed position, a first spring (7) associated with the valve (1) and tending to urge it towards the open position, and a second spring (8) also associated with the valve (1) and tending to oppose its transition into the open position.

Abstract: A tyre for vehicles which does not require pressurisation by means of a pressurised fluid has a tread, two sidewalls, and two beads which are attached to a wheel rim made of elastomer material, and is provided with at least one tubular reinforcement body which is associated with the tread; each of the sidewalls having a respective homogeneous resilient annular membrane, a straight generatrix of which forms an angle (A) other than 90° with the axis of the tyre; the membranes being stretched radially between the tread and the beads such as to be pre-tensioned in the absence of external loads acting on the tyre.

Abstract: The system (CVT) includes a first electrical machine (M1) with a first rotor (R1) provided with a multiphase winding (W1) and fixed firmly to the shaft (1) of the internal combustion engine (ICE) and a second rotor (R2) or intermediate rotor coaxial with the first rotor (R1) and carrying first magnetic means (PM1) operatively cooperating with the winding (W1) of the first rotor (R1), the intermediate rotor (R2) being coupled with at least one axle (2) of the motor vehicle, and a second rotary electrical machine (M2) coaxial with the first (M1) and including a stator (ST), which is arranged on the opposite side of the intermediate rotor (R2) to the first rotor (R1) and is provided with a multiphase winding (W2), as well as the intermediate rotor (R2) which also carries second magnetic means operatively cooperating with the winding (W2) of the stator (ST), a first inverter and a second inverter (I1, I2) of which the a.c.

Abstract: A tyre (3) for vehicles which does not require pressurisation by means of a pressurised fluid has a tread (16), two sidewalls (15), and two beads (8) which are attached to a wheel rim (2) made of elastomer material, and is provided with at least one tubular reinforcement body (18) which is associated with the tread; each of the sidewalls having a respective homogeneous resilient annular membrane (24), a straight generatrix of which forms an angle (A) other than 90° with the axis (13) of the tyre (3); the membranes (24) being stretched radially between the tread (16) and the heads (8) such as to be pre-tensioned in the absence of external loads acting on the tyre (3).

Abstract: The system controls the propulsion of a motor vehicle with a propulsion system (1) which includes an internal combustion engine (E) with a shaft (S) for coupling to a transmission (2). The system includes an accelerator (A) with an associated sensor devices (S1) for supplying electrical signals indicating the force (FP) applied on the accelerator (A) by the driver, and an actuator device (6) operable to alter the position of the accelerator (A).; sensor devices (S2) supplying electrical signals indicating the speed of rotation (n) of the shaft (S) and/or the vehicle speed (V); and an electronic control unit (SCU) operable to control thepropulsion system (1) in dependence on the signals supplied by the sensor devices (S1) and (S2).

Abstract: A safety barrier for road use comprises a barrier element (5) which can be displaced between an operative position, above the road surface, and an inoperative position, in which it does not substantially project above the road surface. Preferably provided is a number of sets of aligned barrier elements, rigidly connected to one another, the adjacent sets being connected together by articulated connecting structures (18) which enable one set of barrier elements (5) to be displaced between its inoperative position and its operative position without modifying the positions of the adjacent sets. In this way, one or more stretches of the barrier can be brought into the inoperative condition, leaving the adjacent stretches of barrier in the normal operative condition. The invention is particularly, although not exclusively, suited for the construction of traffic-divider barriers in road tunnels where it is necessary to eliminate the barrier rapidly in the event of an accident occurring.

Abstract: A safety barrier for road use comprises a barrier element which can be displaced between an operative position, above the road surface, and an inoperative position, in which it does not substantially project above the road surface. Preferably provided is a number of sets of aligned barrier elements, rigidly connected to one another, the adjacent sets being connected together by articulated connecting structures which enable one set of barrier elements to be displaced between its inoperative position and its operative position without modifying the positions of the adjacent sets. In this way, one or more stretches of the barrier can be brought into the inoperative condition, leaving the adjacent stretches of barrier in the normal operative condition.