Patents Assigned to PROPULSION SOLUTIONS S.R..L.
  • Publication number: 20250092946
    Abstract: Filtering pulleys for an accessory transmission of an internal combustion engine have a hub, an annular crown provided with a profile configured to cooperate with a transmission belt positioned externally coaxial around an axis (A) to the hub and supported in rotationally free motion on the hub itself, and a filtering unit for transmitting the torque interposed between the hub and the annular crown. The filtering unit has a torsion spring, a carrier, and a torque limiting joint cooperating with each other to transmit a torque between the hub and the crown. The filtering pulleys can include a damping means carried by a member that is integral with one of the hub and crown and configured to provide variable damping according to the torque.
    Type: Application
    Filed: July 21, 2022
    Publication date: March 20, 2025
    Applicant: PROPULSION SOLUTIONS S.R..L.
    Inventors: Gianluca CARICCIA, Andrea GUALA, GILBERTO DELLE ROSE
  • Publication number: 20240418237
    Abstract: Filtering pulleys have a hub, which is designed to be fixed to a rotary shaft rotating around an axis (A), and a crown, which is coaxial to said hub. The filtering pulley includes a filtering assembly operatively interposed between the hub and the crown and a housing integral to the crown and carried so that the housing can freely rotate relative to the hub by means of support means. The filtering assembly defines a space and has elastic means housed inside the space in a movable manner, and has actuator means configured to cooperate in contact with the elastic means. The actuator means is a single piece together with a tubular portion of the hub and the housing cooperating in contact with the radial inner surface of the crown.
    Type: Application
    Filed: October 20, 2022
    Publication date: December 19, 2024
    Applicant: PROPULSION SOLUTIONS S.R..L.
    Inventors: Gianluca CARICCIA, Andrea GUALA, Jacopo SPINELLI, Stefano AMADIO
  • Publication number: 20240410459
    Abstract: A filtering pulley for an accessory transmission of an internal combustion engine has a hub, a crown, a filtering unit for transmitting the torque that is interposed between the hub and the crown, a torsion spring, a carrier, and a torque limiting joint. The torque limiting joint has an open-loop strip spring and is configured to slide with respect to a surface of the crown when the torque transmitted between the crown and the hub reaches a predetermined level.
    Type: Application
    Filed: October 5, 2022
    Publication date: December 12, 2024
    Applicant: PROPULSION SOLUTIONS S.R..L.
    Inventors: Gianluca CARICCIA, Andrea GUALA, GILBERTO DELLE ROSE
  • Publication number: 20240288057
    Abstract: Filtering pullies with a hub adapted to be fixed to a rotating shaft, a crown mounted coaxially and rotationally free on the hub, at least one elastic group arranged circumferentially with respect to the hub and the crown and interposed, each, between a pair of first elements integral with the hub and between a pair of second elements integral with the crown are disclosed. The at least one elastic group is placed with a circumferential interference (?) with respect to the first elements integral with said hub.
    Type: Application
    Filed: May 17, 2022
    Publication date: August 29, 2024
    Applicant: PROPULSION SOLUTIONS S.R..L.
    Inventors: Gianluca CARICCIA, Andrea GUALA, Stefano AMADIO, Jacopo SPINELLI
  • Publication number: 20240255046
    Abstract: Filtering pullies with a hub adapted to be fixed to a rotating shaft, a crown mounted coaxially and rotationally free on the hub, at least one elastic group arranged circumferentially with respect to the hub and the crown and interposed, each, between a pair of first elements integral with the hub and between a pair of second elements integral with the crown are disclosed. The pulley has a dust protection system configured to isolate the at least one elastic group with respect to the external environment and to provide an axial force generating a damping to the movement between the hub and the crown.
    Type: Application
    Filed: May 17, 2022
    Publication date: August 1, 2024
    Applicant: PROPULSION SOLUTIONS S.R..L.
    Inventors: Gianluca CARICCIA, Andrea GUALA, Stefano AMADIO, Jacopo SPINELLI
  • Publication number: 20240240705
    Abstract: Filtering pullies with a hub adapted to be fixed to a rotating shaft, a crown mounted coaxially and rotationally free on the hub, at least one elastic group arranged circumferentially with respect to the hub and the crown and interposed, each, between a pair of first elements integral with the hub and between a pair of second elements integral with the crown are disclosed. The pulley has a dust protection lip carried integrally by said hub and configured to slide, in tight manner, with respect to an element integral with said crown. The dust protection lip is a labyrinthine sealing lip.
    Type: Application
    Filed: May 17, 2022
    Publication date: July 18, 2024
    Applicant: PROPULSION SOLUTIONS S.R..L.
    Inventors: Gianluca CARICCIA, Andrea GUALA, Stefano AMADIO, Jacopo SPINELLI