Abstract: A continuously variable transmission device (1) for a two-, three- or four-wheel motorcycle comprises a gear shift regulation device provided with a slide (40) axially slidable and suitable to engage special rollers (18) to hold them during the gear shift. A mobile bushing (9) is suitable to influence the slide (40) to cause its translation from a rearward position to a forward limit position to engage the special rollers (18).

Abstract: A continuously variable transmission device (1) for a two-wheel, three-wheel or four-wheel motorcycle includes a gear shift regulation device suitable to operate on special rollers (18) through an adjustable axial action independently of the number of engine revolutions. The device influences the centrifugal movement of the rollers (18) and thus influences the gear shift.

Abstract: An electric drive motorcycle (100) is competed with a filter box in the rear portion thereof, without limiting the space available for the batteries, comprises: a front portion comprising one or more front wheels and a handlebar; a rear portion comprising a saddle (101), a shell body arranged below said saddle (101), and a rear wheel arranged below said shell body; an intermediate portion extending as a connection between said front portion and said rear portion; an electric drive unit (8) connected to said rear wheel (105); and a hybrid supply unit supplying said electric drive unit (8), comprising at least a battery unit (115) and a combustion engine (116) actuating an electric generator (120), said combustion engine(116) comprising an exhaust duct (133) with an expansion chamber (134) and a filter box (135) for feeding air to the combustion engine (116), wherein said electric generator (120) is apt to supply said battery unit (115) and/or said electric drive unit, wherein, inside the shell body (107) and b

Abstract: An electric drive motorcycle (100), allows an effective arrangement of the battery unit thereof, optimizing the available space, and comprises: a front portion comprising one or more front wheels (103) and a handlebar (104); a rear portion comprising a saddle (101), a shell body (107) arranged below said saddle (101), and a rear wheel (105) arranged below said shell body (105); an intermediate portion (108) extending as a connection between said front portion and said rear portion; an electric drive unit (8) connected to said rear wheel by means of a transmission unit; and a power supply unit feeding said electric drive unit and comprising at least a battery unit (15; 115), wherein said battery unit (15; 115) is shaped so as to have a polyhedral shape comprising at least a first side (28) tilted with respect to a vertical plane orthogonal to the front-rear direction of the motorcycle (100), wherein the battery unit (115) occupies a position below a helmet carrying compartment (11) arranged below the saddle (1

Abstract: An electric drive motorcycle (100), comprises: a front portion comprising one or more front wheels (103) and a handlebar (104); a rear portion comprising a saddle (101), a shell body (107) arranged below said saddle (101), and a rear wheel (105) arranged below said shell body (105); an intermediate portion (108) extending as a connection between said front portion and said rear portion; an electric drive unit (8) connected to said rear wheel (105); a power supply unit feeding said electric drive unit (8); and a helmet carrying compartment (11) placed in the shell body (107) below the saddle (101), wherein said power supply unit is arranged in a position below said helmet carrying compartment (11), so that said saddle (101), said helmet carrying compartment (11) and said power supply unit are substantially stacked on each other, being said helmet carrying compartment (11) and said power supply unit arranged inside the shell body (107), wherein said supply unit comprises a battery unit (15) or a battery unit (1

Abstract: An electric drive motorcycle (100) allows a suitable configuration of all the components deputed to the electric supply of the motorcycle electric drive, and comprises: a front portion comprising one or more front wheels (103) and a handlebar (104); a rear portion comprising a saddle (101), a shell body (107) arranged below said saddle (101), and a rear wheel (105) arranged below said shell body (107); an intermediate portion (108) extending as a connection between said front portion and said rear portion; an electric drive unit (8) connected to said rear wheel (105); and a hybrid supply unit supplying said electric drive unit (8), comprising at least a battery unit (115) and a combustion engine (116) actuating an electric generator (120) apt to supply said battery unit (115) and/or said electric drive unit (8), wherein said shell body (107) defines a housing space apt to receive at least said battery unit (115) and said combustion engine (116), with the related electric generator (120), placed side by side t

Abstract: An electric drive motorcycle (100) allows a suitable and effective cooling of the battery unit when the electric motor is operated, and comprises: a front portion comprising one or more front wheels (103) and a handlebar (104); a rear portion comprising saddle (101), a shell body (107) arranged below said saddle (101), and a rear wheel (105) arranged below said shell body(107); an intermediate portion extending as a connection between said front portion and said rear portion; an electric drive unit (8) connected to said rear wheel (105); and a hybrid supply unit supplying said electric drive unit (8), comprising at least a battery unit (115) and a combustion engine (116) actuating an electric generator (120) apt to feed said battery unit (115) and/or said electric drive unit (8), wherein the combustion engine (116) drives a cooling fan (121) arranged so that, when this is drawing a flow of cooling air through an inlet mouth (122), such flow wets the battery unit (115), before being drawn, wherein the combusti

Abstract: A synchronizer for a transmission to be used aboard a motor vehicle, includes: a primary shaft; a bell-shaped member assembled on the primary shaft having inside a friction cylindrical surface; a supporting element, revolvingly mounted on the primary shaft and housed within the bell-shaped member; a shoe having a friction profile located within an outer edge of the supporting element and faced towards the friction cylindrical surface of the bell-shaped member, jointed to the supporting element by a pair of arms in an articulated quadrilateral linkage configuration; and means for translating the shoe by rotating said arms both in clockwise and counter clockwise direction, by causing a projection of the shoe above the outer edge of the supporting element, interference of an end of the shoe with said friction cylindrical surface of the bell-shaped member, thereby causing a jamming thereof.

Abstract: A synchronized transmission, which can be used aboard a vehicle and in particular a motorcycle, wherein the crankshaft actuated by the engine and the driven shaft, connected to a rear wheel, are substantially parallel therebetween, the driven shaft receiving the motion from a primary shaft kinematically connected to the crankshaft, wherein the primary shaft has at least one toothed wheel, which transmits the motion to said driven shaft, arranged on a driven bushing assembled on the primary shaft, the primary shaft comprising a passing-through axial channel wherein an actuation stem is inserted, comprising a clutch, acting on said driven bushing and actuated axially through said stem, which makes said driven bushing integral to the motion transmission so as to exclude the reversibility of the free wheel itself.

Abstract: A synchronized transmission (1) used in a motorcycle, wherein a crankshaft actuated by the engine and a driven shaft, connected to a rear wheel, are substantially parallel and kinematically connected therebetween, comprising a first axial actuation synchronizer (16) placed at the front of the crankshaft (2) and a second axial actuation synchronizer (17) arranged at the front of a driven shaft kinematically connected to a rear wheel, each synchronizer (16, 17) comprising a respective rotating cam actuator (26, 29) having a cam (29) apt to be rotated by a respective cam spindle (30) by determining a translation thereof which interferes with an actuation end of the respective synchronizer (16, 17).

Abstract: A high performance synchronous transmission to be used aboard a motorcycle for transmitting the motion generated by an engine to a driving wheel, between a crankshaft and a hub shaft parallel therebetween and perpendicular to the median plane of the motorcycle, comprising on the crankshaft a centrifugal clutch, for the automatic engagement of the first speed above a predetermined rotation regime, and a driving pulley apt to transmit the motion through a subsequent kinematic chain, is provided with a coupling between crankshaft and driving pulley which connects them directly, by determining with its own engagement the exclusion of said centrifugal clutch, said coupling being controlled in disengagement when a control lever is in active position.

Abstract: A synchronous transmission (1) for a motorcycle comprises a primary shaft (51) of mechanical gearbox, and a pair of secondary shafts (52, 53) equipped with one or more secondary gearwheels for transmitting the motion to a hub shaft (75), wherein a desmodromic drum (70) actuates a pair of coupling forks (67, 68) selectively defining the position of respective sliding couplings (65, 66) between primary (51) and secondary shafts (52, 53) to select all speeds of the transmission, the desmodromic drum (70) being in phase with a device (80) for actuating the gearwheels, and wherein the coupling forks (67, 68) are equipped with a cam follower end (69) maneuvered by said desmodromic drum (70) having a cylindrical surface (79) whereon a single desmodromic track (19) is formed.

Abstract: A high performance synchronous transmission to be used aboard a motorcycle for transmitting the motion generated by an engine to a driving wheel, between a crankshaft and a hub shaft parallel therebetween and perpendicular to the median plane of the motorcycle, having a primary shaft of mechanical gearbox equipped with a primary gearwheel, and a pair of secondary gearwheels equipped with one or more secondary shafts for transmitting the motion to a hub shaft, wherein the primary shaft receives the motion through a driven pulley which receives the motion by a driving pulley connected to the crankshaft, an input clutch being provided on the primary shaft.

Abstract: A high performance synchronous transmission (1) to be used aboard a motorcycle for transmitting the motion generated by an engine to a driving wheel, between a crankshaft (2) and a hub shaft parallel there between and perpendicular to the median plane of the motorcycle, comprises an actuator (80) having an electric motor (81) which rotates an actuator shaft (85) acting on a set of cams (86) to actuate a clutch lever (47) acting on an input clutch (40), and a first control lever (20) acting on a second clutch (5), in a way synchronized with the gearwheels which are engaged.

Abstract: A high performance synchronous transmission (1) to be used aboard a motorcycle for transmitting the motion generated by an engine to a driving wheel, between a crankshaft (2) and a hub shaft parallel therebetween and perpendicular to the median plane of the motorcycle, providing a driving pulley (13) arranged at the crankshaft and a driven pulley (17) arranged at a hub shaft (75) and connected kinematically to an input clutch (40), the two pulleys (13, 17) being connected by a belt (18) so as to guarantee a substantially synchronous transmission, the belt (18) being equipped with a tensioning device (30) having a tensioning wheel (34) pressed on a branch of the belt (18), said tensioning wheel (34) being assembled on an eccentric element (32) the position thereof is variable, wherein the tensioning device (30) has a fixed pin (31), integral to a fixed portion of the transmission (1), whereon a circular and eccentric supporting element (32) is assembled, which forms a circular periphery whereon a bearing (33)

Abstract: A synchronizer (20) for a speed transmission which can be used aboard a vehicle, in particular a motorcycle, allows the possibility of selecting each gear in any moment, by guaranteeing as additional feature that of being able to exploit the effect of the exhaust brake independently from the engaged gear and independently from the motor regime, and it comprises: a primary shaft (8); a bell-shaped member (1) assembled on said primary shaft (8) having inside a friction cylindrical surface (18); a supporting element (2), revolvingly mounted on said primary shaft (8) and housed within said bell-shaped member (1); at least a shoe (3) having a friction profile localised within the outer edge of the supporting element (2) and faced towards the friction cylindrical surface (18) of the bell-shaped member (1), jointed to said supporting element (2) by a pair of arms (4) in an articulated quadrilateral configuration; and means for translating said shoe (3) by rotating said arms (4) both in clockwise and counterclockwise

Abstract: A continuously variable transmission device (1) for a two-wheel, three-wheel or four-wheel motorcycle includes a gear shift regulation device suitable to operate on special rollers (18) through an adjustable axial action independently of the number of engine revolutions. The device influences the centrifugal movement of the rollers (18) and thus influences the gear shift.

Abstract: A continuously variable transmission device (1) for a two-wheel, three-wheel or four-wheel motorcycle includes a cam system (20, 22; 32a, 32b) operating between a fixed bushing (11) and a mobile bushing (9). The device is configured to obstruct the approach between the active surfaces (8a, 10a) or to facilitate the approach of the active surfaces.

Abstract: A continuously variable transmission device (1) for a two-, three- or four-wheel motorcycle comprises a gear shift regulation device provided with a slide (40) axially slidable and suitable to engage special rollers (18) to hold them during the gear shift. A mobile bushing (9) is suitable to influence the slide (40) to cause its translation from a rearward position to a forward limit position to engage the special rollers (18).

Abstract: A four-speed transmission (1) for motorcycles has performances similar to those of a continuously variable transmission but, at the same time, a high yield and an easy and automatic operation and it comprises: a crankshaft (2) with a first and a second pulley (9, 10) mounted thereon; a primary shaft (3), with third and fourth pulley (10, 14) and a first and a second gear (18, 19) mounted thereon; transmission belts (11, 13) connecting said pulleys for the transmission of the first and the second speed and of the third and the fourth speed respectively; a secondary shaft (4) with a third and a fourth gear (20, 21) engaged with said first and second gear (18, 19) for transmitting the first and the third speed, and the second and the fourth speed respectively; a first synchronizer (16), which activates the transmission of the third and the fourth speed; and a second actuated synchronizer (17), actuating the transmission of the second and the fourth speed; wherein a first and a second free wheel (15, 22) can rele