Patent ID: 7895913
Filing Date: 2011-03-01
Classification: B60K,F16D,F16H,Y10T

Abstract:
1. A power transmission device for a motor vehicle, comprising: a first shaft; a second shaft; a clutch for transferring torque between the first and second shafts; an electric motor; and a clutch actuation system including a drive member and a cam member in cooperation with one another, the drive member being driven by the electric motor and including first and second rollers rotatably mounted thereon, the cam member including first and second circumferentially extending channels each having a continually reducing radius, the first and second channels being separate from and extending beside one another, the first roller being positioned within the first channel engaging the drive member and the cam member, the second roller being positioned within the second channel engaging the drive member and the cam member such that relative rotation between the drive member and the cam member translates the cam member along an axis of relative rotation to vary a magnitude of force applied to the clutch.