Filtering pulley for a belt drive
AssigneeDayco Europe S.R.L.
InventorsGianluca Cariccia, Federico Domenico Licata
Life of this patent
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Abstract
A filtering pulley for an accessory drive of an internal combustion engine, having a hub suitable for connection to an engine accessory, an annular crown provided with a profile configured to cooperate with a drive belt, a coil spring able to transmit torque between the crown and the hub, a first carrier constrained to a first end of the spring and a second carrier constrained to a second end of the spring. The annular crown is externally coaxial to the hub and supported in a rotationally free manner on the hub, and each of the carriers is rotationally coupled to both the hub and the crown with a limited possibility of relative rotation with respect to each of them.
Claims14
A filtering pulley for an accessory drive of an internal combustion engine, comprising:
- a hub,
- an annular crown provided with a profile configured to cooperate with a drive belt, externally coaxial to the hub and supported in a rotationally free manner on the hub, and
- a filtering unit interposed between the hub and the crown and comprising;
- a coil spring able to transmit torque between the crown and the hub,
- a first carrier constrained to a first end of the spring;
- and
- a second carrier constrained to a second end of the spring,
- wherein each of said first and second carriers are fitted in a freely rotational manner to both the hub and the crown with an angular play with respect to the hub and the crown.
Dependencies are inferred from the claim text.