| 摘要 |
In general, an assembly includes at least one piston housed in a cylinder and a transition arm coupled to the piston. The transition arm is coupled to a member that is housed in a channel defined by a rotating member. Movement of the transition arm adjusts a clearance distance between an end face of the piston and an end wall of the cylinder, and causes the member to slide in the channel such that a stroke of the piston is changed. The member is configured to allow the rotating member to rotate relative to the transition arm and/or configured to allow a change in orientation of the transition arm with respect to the rotating member. In other implementations, the transition arm includes a nose pin and the rotating member is coupled to the nose pin such that axial movement of the transition arm changes an axial position of the piston in the cylinder and causes the nose pin to move relative to the rotating member along an axis other than a central axis of the nose pin.
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