Clutch drive with antirotation spring

Clutch drive comprising a spindle having an axis, a driving member and a driven member mounted for rotation about the axis of said spindle, a fluid pressure responsive piston slidable on said spindle in response to fluid pressure supplied to the piston for effecting engagement and disengagement of the driving and driven members to effect a driving connection between the driving and driven members when said members are engaged and to break said driving connection when the members are disengaged, one of said members including a portion movable parallel to the axis of said spindle in response to movement of said piston, resilient means yieldably urging said parallel movable portion into driving engagement with said other member, and bearing means movable axially along said spindle with said parallel movable member and having rotative and non-rotative components for providing a connection between the piston and said parallel movable portion, characterized in that said non-rotative component of said bearing means and said spindle are interconnected by spring means which yields to accommodate axial movement of the bearing means along said spindle and resists rotation of the non-rotative component of the bearing means to prevent rotation of the non-rotative portion of the bearing means.