Patent ID: 8951156
Filing Date: 2015-02-10
Classification: B60K,F16H

Abstract:
1. A transfer case comprising: a planetary gear set configured to be rotated by a shaft that is driven by a power source, the planetary gear set having a sun gear, a plurality of planet gears, a ring gear, and a planet gear carrier; a clutch collar moveably disposed on an input shaft for selectively coupling the planetary gear set to the input shaft; and an actuator configured to actuate the clutch collar between a low speed range position in which the clutch collar engages the planet gear carrier and is disengaged from the sun gear and a high speed range position in which the clutch collar engages a face gear on the sun gear and is disengaged from the planet gear carrier, wherein the actuator has an actuator shaft that is operatively coupled to the clutch collar and first and second pistons that are moveably disposed in first and second cavities that are located proximate opposite ends of the actuator shaft, respectively, such that the first piston is disposed proximate a first end of the actuator shaft and the second piston is not fixedly disposed on the actuator shaft.