Variable-ratio transmission
OwnerAntonio Francisco Cesaroniinventor
Life of this patent
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Abstract
A variable-ratio transmission comprises a differential kinematic mechanism including at least two drive inputs and one drive output and a speed variator associated with at least one of the two drive inputs.
Claims17
A variable-ratio transmission, characterized in that it comprises a differential kinematic mechanism including at least two drive inputs and one drive output and a speed variator associated with at least one of the two drive inputs.
A transmission according to one or more of the preceding claims in which the speed variator is of the continuous, disc-and-wheel type.
A transmission according to one or more of the preceding claims in which the differential kinematic mechanism is of the type with bevel gears.
A transmission according to one or more of the preceding claims in which the variation is controlled by displacing two elements of the transmission relative to one another along a displacement axis, and in which the elements can give rise to a thrust having a component along the displacement axis, which component is correlated with the torque transmitted by the transmission, the transmission comprising a system for controlling the variation of the transmission ratio, the system including operative control means interposed between actuator means and at least one of the two transmission elements in order to instigate the displacement upon the operation of the actuator means, resilient means being interposed between the operative control means and the actuator means and can yield resiliently as a result of the thrust component along the displacement axis when the said component exceeds a predetermined threshold value corresponding to a maximum value of the torque transmitted by the transmission.
Dependencies are inferred from the claim text.