US 12,331,822 B2
Filtering pulley
Gianluca Cariccia, Ivrea (IT); Andrea Guala, Ivrea (IT); and Gilberto Delle Rose, Ivrea (IT)
Assigned to MUVIQ S.R.L., Ivrea (IT)
Appl. No. 18/580,326
Filed by PROPULSION SOLUTIONS S.R..L., Ivrea (IT)
PCT Filed Jul. 21, 2022, PCT No. PCT/IB2022/056727
§ 371(c)(1), (2) Date Jan. 18, 2024,
PCT Pub. No. WO2023/002419, PCT Pub. Date Jan. 26, 2023.
Claims priority of application No. 102021000019376 (IT), filed on Jul. 21, 2021.
Prior Publication US 2025/0092946 A1, Mar. 20, 2025
Int. Cl. F16H 55/36 (2006.01); F16F 15/121 (2006.01)
CPC F16H 55/36 (2013.01) [F16F 15/1216 (2013.01); F16H 2055/366 (2013.01)] 14 Claims
OG exemplary drawing
 
1. Filtering pulley for an accessory transmission of an internal combustion engine, comprising:
a hub,
an annular crown provided with a profile configured to cooperate with a transmission belt, externally coaxial around an axis (A) to said hub and supported in rotationally free motion on the hub itself,
a filtering unit for transmitting torque interposed between said hub and said crown, the filtering unit comprising a torsion spring, a carrier and a torque limiting joint cooperating with each other to transmit a torque between said hub and said crown,
damping means carried by a member integral with one of said hub and said crown, said damping means being configured to provide variable damping according to said torque, and
a sliding bearing radially interposed between said hub and said crown, said damping means being carried by said sliding bearing.