Abstract: Plant for forming predetermined quantities of synthetic material comprising a rotary turntable carrying on its periphery a plurality of dispensing devices, and means for feeding the material in the molten state to said dispensing devices; the plant also comprises a fixed part directly connected to the molten material feed, a rotary sealed joint connecting said fixed part to the rotary turntable, operating means for interacting with the dispensing devices positioned on the rotary turntable to operate them in the sense of opening and closing them in response to the rotations of the turntable, and means for rotating the turntable.

Abstract: Plant for forming predetermined quantities of synthetic material comprising a rotary turntable carrying on its periphery a plurality of dispensing devices, and means for feeding the material in the molten state to said dispensing devices; the plant also comprises a fixed part directly connected to the molten material feed, a rotary sealed joint connecting said fixed part to the rotary turntable, operating means for interacting with the dispensing devices positioned on the rotary turntable to operate them in the sense of opening and closing them in response to the rotations of the turntable, and means for rotating the turntable.

Abstract: Apparatus for molding a plastic seal inside a closure for closing a container, having a line for transferring the closures through a closure heating station, a station for dispensing and preforming plastic material in the pasty state, suitable to deposit a dose of material inside a respective closure and preform each dose dispensed inside each closure in an annular configuration, and a final forming station, in which the preformed annular dose is molded so as to form the final seal inside the closure.

Abstract: A fuel metering valve comprises a valving member mobile axially within a casing and operated by an electromagnet, with said valving member there being rigid an armature arranged for attraction by the core of the electromagnet, and an annular stop member being provided to act as a stop for said valving member and being interposed between a shoulder of said casing and the front surface of a nosepiece rigid with said casing and arranged to house said valving member; the stop member is provided, on that side facing said nosepiece, with at least two different flat surfaces, of which a first surface is arranged to form a stop for said valving member and a second surface is arranged to form a shoulder for said front surface of the nosepiece, said first and second surfaces being positioned each at a different distance from said casing shoulder.

Abstract: A valve includes an air inlet for air coming from a first part of an engine intake passage, which is positioned upstream of a throttle valve and an air outlet for air moving toward a second part of the intake passage which is positioned downstream of the throttle valve. A hollow tubular element is connected to the air inlet and has primary connecting orifices between the air inlet and the air outlet. A movable obturator is housed within the tubular element. A magnetic core and winding is energized by an electrical control unit to generate a magnetic field to move a conical edge of the obturator to selectively open the primary connecting orifices to obtain laminar air flow across the primary connecting orifices, with this laminar air flow being directly proportional to the air passage section provided by the opened primary connecting orifices.