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: An air-exchange device for buildings, designed to be installed between an internal environment and an external environment, comprising, a casing having a substantially flattened parallelepiped shape; a heat exchanger housed inside said casing; and a first fan and a second fan, which have respective intake and delivery sections and are arranged for generating, respectively, a first airflow directed from the inside to the outside and a second airflow directed from the outside to the inside, where the first and second airflows are in a relationship of mutual heat exchange in said heat exchanger.

Abstract: A photovoltaic receiver comprising an elongated structure bearing a plurality of photovoltaic cells. Said structure carries a plurality of finned dissipators, mounted on which are said photovoltaic cells, and ventilating means, designed to convey a flow of cooling air towards said dissipators.

Abstract: A high-concentration photovoltaic system comprises at least one photovoltaic receiver (12) and a reflecting device (14) arranged for concentrating solar energy on said photovoltaic receiver (12). The photovoltaic receiver (12) comprises a tubular body (28) elongated in a longitudinal direction (30). The photovoltaic receiver (28) comprises a plurality of strips of photovoltaic material (32) fixed within said body (28). The supporting body (28) is provided with a plurality of lenses (34) arranged for focusing on said strips of photovoltaic material (32) the reflected solar radiation coming from said reflecting device (14).

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: An air-exchange device for buildings, designed to be installed between an internal environment and an external environment, comprising, a casing having a substantially flattened parallelepipedal shape; a heat exchanger housed inside said casing; and a first fan and a second fan, which have respective intake and delivery sections and are arranged for generating, respectively, a first airflow directed from the inside to the outside and a second airflow directed from the outside to the inside, where the first and second airflows are in a relationship of mutual heat exchange in said heat exchanger, wherein, the heat exchanger separates from one another a first casing section set in which is said first fan and a second casing section set in which is said second fan, said first casing section comprises a first chamber communicating with a first inlet of the heat exchanger and with an external inlet opening, a second chamber communicating with a first outlet of the heat exchanger and with the intake section of the f

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 system for monitoring a state of operation of a photovoltaic panel. The system comprises a transponder for connection to the panel, wherein, when the panel is in a first state of operation, the transponder transmits an individual identifier code in response to a pre-determined received signal and wherein, when the panel is in a second state of operation, the transponder does not transmit the individual identifier code.

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 solar receiver for a linear-focusing solar concentrator, comprising, a base, which is elongated in a direction parallel to a focal line and carries an array of strip-shaped targets arranged orthogonal to said focal line and set at a distance apart from one another in a direction parallel to the focal line; a focusing assembly including an array of optical elements arranged for focusing solar radiation on said strip-shaped targets, the focusing assembly being mobile with respect to the base of the photovoltaic receiver in a direction parallel to said focal line; and an azimuthal pointing device, designed to move the focusing assembly with respect to said base as a function of the position of the sun.

Abstract: An antitheft and monitoring system for a plurality of photovoltaic panels, wherein the panels are connected by means of a connection line to a distribution substation. The monitoring system comprises a first unit associated to the distribution substation, wherein the first unit is designed to generate activation codes, and a plurality of second units associated to the panels, wherein each of the second units is designed to inhibit operation of the respective panel in the absence of the activation code for a pre-set period. Furthermore, each second unit is selectively activatable via a unique activation code generated by the first unit. The antitheft and monitoring system is moreover configured to activate an individual panel selectively by sending onto the connection line the corresponding unique activation code and detecting, via a measuring device, the characteristics of voltage and current of the individual active panel.

Abstract: A photovoltaic receiver comprising an elongated structure bearing a plurality of photovoltaic cells.

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: 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: 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.

Abstract: A method of calibrating the injectors of an injection system for an internal combustion engine which can compensate for the different flow rates of the injectors fitted in the engine, which are due to the production tolerances of the injectors, in order to re-match the injectors with consequent balancing of the combustion and overall improvement in the performance of the engine. The method is based on the determination of the flow rates of the injectors both with low admissions (idling) and with high admissions (acceleration) by measurement of the torque pulses supplied by each cylinder of the engine with the use of a dynamic torque measurement method.

Abstract: Starting from a sequence of values of indicated torque detected for each expected combustion in the engine a cycle signal is generated as a combination of at least two successive values of the said sequence. The peak value of the said cycle signal is then compared with a comparison threshold chosen preferably in proportion of the fuel injection duration into the cylinders. Misfires are identified preferably from the result of a comparison between the said peak value and the said comparison threshold which differs from the result of comparison in the presence of regular operation of the engine.

Abstract: The device comprises a heat-sensitive element which is heated to a controllable extent so as to keep it at a predetermined temperature, for example, average body temperature. Detector means measure the power or energy required to keep the heat-sensitive element at this predetermined temperature, thus providing a signal indicative of the thermal comfort conditions of the environment. The heat-sensitive element has a general elongated shape so that it can be inserted, for example, into a motor vehicle safety belt, ensuring that the indication obtained indicates the general thermal comfort conditions throughout the entire region of the environment in which the heat-sensitive element extends.