Abstract: A continuous and reversible mechanical transmission system with a power branch, with an input shaft (17) and an output shaft (16), formed by a continuously variable transmission (1) connected to the shaft of the motor and by at least one planetary gear train (2) linked to the shaft of the motor (17) and to the continuously variable transmission. The continuously variable transmission includes a first pair of gears (3 and 4) linked by means of a transmission (5). The gear train (2) comprises a second pair of gears (6-7) linked by a transmission (8) and at least a first and second transmission step (9-10), each one of which comprises an epicyclic gear carrier (9-13) and a pair of epicyclic gears (12-14).

Abstract: A continuous and reversible mechanical transmission system with a power branch, with an input shaft (17) and an output shaft (16), formed by a continuously variable transmission (1) connected to the shaft of the motor and by at least one planetary gear train (2) linked to the shaft of the motor (17) and to the continuously variable transmission. The continuously variable transmission includes a first pair of gears (3 and 4) linked by means of a transmission (5). The gear train (2) comprises a second pair of gears (6-7) linked by a transmission (8) and at least a first and second transmission step (9-10), each one of which comprises an epicyclic gear carrier (9-13) and a pair of epicyclic gears (12-14).

Abstract: A telescopic loudspeaker includes an extendable telescopic body (1) responsible for housing a loudspeaker (2) for generating sound from a input audio signal and for creating a inner resonance chamber (2) of volume V0 when the telescopic body (1) is retracted and of volume V1 when the telescopic body (1) is extended, V1>V0 being met. The telescopic body (1) includes a support base (15); of hollow bodies (11,12,13) with decreasing transversal sections and coupleable to one another, the section decreasing progressively from the body (11) closest to the base (15) up to the body (13) furthest from the base (15); and a gasket (8) between each pair of consecutive bodies (11,12,13) of the telescopic body (1) for sealing the air chamber inside the enclosure of the telescopic loudspeaker.

Abstract: Support stand for audio-visual reproduction appliances with speakers, which comprises speaker support means (14) of a magnetic kind; telescopic arms (7) that are fitted at their free end with support means (14); a base plate (1) with a front shelf (2), folding down onto this plate, and with a rear support leg (3), likewise folding-down onto the plate, to which the telescopic arms (7) are jointed. The front shelf (2) and rear leg (3) are jointed on opposite sides of the base plate, according to axes (5,6) parallel to the telescopic arms (7). Applicable for small-sized, hand-held, mobile audio or video reproduction appliances, to act as a means both for supporting the reproduction appliance and the speakers on any level surface.

Abstract: A telescopic loudspeaker includes an extendable telescopic body (1) responsible for housing a loudspeaker (2) for generating sound from a input audio signal and for creating a inner resonance chamber (2) of volume V0 when the telescopic body (1) is retracted and of volume V1 when the telescopic body (1) is extended, V1>V0 being met. The telescopic body (1) includes a support base (15); of hollow bodies (11,12,13) with decreasing transversal sections and coupleable to one another, the section decreasing progressively from the body (11) closest to the base (15) up to the body (13) furthest from the base (15); and a gasket (8) between each pair of consecutive bodies (11,12,13) of the telescopic body (1) for sealing the air chamber inside the enclosure of the telescopic loudspeaker.

Abstract: Continuously variable transmission is discloses as comprising a continuously variable speed device such that the speed of the final outlet shaft (8) may be varied in any rotation direction and to zero using a combination of different diameters of a first pulley.

Abstract: An adjustable support which enables any element to be positioned mainly those concerned with visual communications, preferably having a flat form (plasma screen, LCD, TFT, poster advertisement etc.) at any angle and in any position with respect to the initial plane with the normal vector to the screen covering a wide three dimensional angular range (stereoradian). Due to its special configuration the adjustable support formed by at least three rods which are adjustable in length, permits the one way definition of a plane on which a supported visual element is placed, a plane which may form a solid angle such that it permits optimum viewing from any position of the user since the normal vector to the screen may be made to coincide with the visual line of the user.

Abstract: The invention relates to a transmission which is continually variable from an input shaft (E) to an output shaft (S), in which the input power is divided and transmitted along two parallel paths, namely a fixed ratio path and a variable ratio path, the respective speeds thereof being combined at an epicyclic output gear (7). The variable ratio path is formed by an epicyclic gear (5), a pulley variator (1, 2, 3) and an epicyclic gear (6) having two different ratios with which the brake (6.3) or coupling (6.5) is actuated. Two speed ranges (L and H) are provided at the output shaft (S). The L range passes from negative speeds to positive speeds, through a neutral point, when the variator ratio is reduced. The H range provides increasing positive speeds when the course of the variator is reversed. The passage between ranges L and H is synchronised at the point at which the speed of the intermediate shaft (5.3-6.5) is cancelled.