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US 2019/0316659 A1Published application
High performance synchronous transmission
AssigneePiaggio & C. S.P.A.
InventorsWalter Mariotti, Luca Nuti
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AssigneePiaggio & C. S.P.A.
InventorsWalter Mariotti, Luca Nuti
Estimating the term…
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) is assembled, whereon, in turn, a pressing wheel (34) is assembled, positioned so as to exert a pressure between the outer periphery thereof (35) on the outer face (36) of the belt (18).
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, providing a driving pulley arranged at the crankshaft and a driven pulley arranged at a hub shaft and connected kinematically to an input clutch, the two pulleys being connected by a belt so as to guarantee a substantially synchronous transmission, the belt being equipped with a tensioning device having a tensioning wheel pressed on a branch of the belt, said tensioning wheel being assembled on an eccentric element the position thereof is variable, wherein the tensioning device has a fixed pin, integral to a fixed portion of the transmission, whereon a circular and eccentric supporting element is assembled, which forms a circular periphery whereon a bearing is assembled, whereon, in turn, a pressing wheel is assembled, positioned so as to exert a pressure between the outer periphery thereof on the outer face of the belt.
Dependencies are inferred from the claim text.