Speed variator
AssigneeItalycar S.R.L.
InventorFabio Sorze
Life of this patent
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Abstract
A speed variator comprises a bell-shaped body (5) forming a frustoconical rolling surface (6) able to rotate about its own axis of symmetry (Y), a wheel (7) able to rotate about a second axis (W) and engaged by rolling with the rolling surface (6) to allow the transmission of a driving torque between the wheel (7) and the bell-shaped body (5), and an actuator (9) acting between the wheel (7) and the bell-shaped body (5) for moving the wheel (5) and the bell-shaped body (7) towards and/or away from each other in such a way as to make the wheel (7) engage with different portions of the rolling surface (6). The rolling surface (6) and the second axis (W) converge in a point (P).
Claims17
A speed variator, comprising:
- a first element (5) having an inside surface and an outside surface, being conical or frustoconical, axially symmetric relative to a first axis (Y) and that rotates on itself about the first axis (Y);
- a rolling surface (6) located on the inside surface of the first element (5);
- a second element (7) that rotates on itself about a second axis (W) and that engages the rolling surface (6), for allowing the transmission of a driving torque between the first and second elements (5, 7);
- an actuator (9) for moving the first and second elements (5, 7) towards and/or away from each other in such a way as to make the second element (7) engage with different portions of the rolling surface (6) for varying a gear ratio between the first and second elements (5, 7);
- the rolling surface (6) and the second axis (W) converging in a point (P).
Dependencies are inferred from the claim text.