Patent ID: 7712592
Filing Date: 2010-05-11
Classification: E05Y,F16D,Y10S

Abstract:
1. A decoupler assembly for transferring torque between a drive shaft and an endless drive element of an automotive engine, the decoupler assembly comprising: a hub adapted to be fixedly secured to the shaft, the hub extending axially between a first hub end and a second hub end; a pulley disposed concentrically about the hub and adapted to be drivingly engaged with the endless drive element; a bearing between the hub and the pulley, the bearing supporting the pulley for rotation about a rotational axis of the hub; a carrier rotatably mounted about the second hub end; a clutch element disposed axially between the hub and the pulley and coupled to the carrier for rotation therewith, the clutch element being configured to transmit rotary power from the pulley to the carrier and to enabling overrunning of the hub relative to the pulley; a torsion spring extending axially between the hub and the carrier, a first end of the torsion spring being engaged to the carrier, a second end of the torsion spring opposite the first end of the torsion spring being coupled to the hub such that the torsion spring is configured to transfer torque from the carrier to the hub; and a thrust plate fixedly mounted on the second end of the hub, the thrust plate limiting movement of the carrier in a direction opposite the torsion spring; wherein one of the carrier and the thrust plate includes an anti-ramp up feature, wherein the other one of the carrier and the thrust plate includes a circumferentially extending slot into which the anti-ramp up feature is received, the slot having a first slot end and a second slot end, the anti-ramp up feature traveling within the slot between the first slot end and the second slot end for limiting rotation between the carrier and the thrust plate.