Patent ID: 6575867
Filing Date: 2003-06-10
Classification: B60K

Abstract:
A transfer case comprising:an input shaft; first and second output shafts; a first planetary gearset having a first sun gear driven by said input shaft, a first ring gear fixed to a stationary member, and a set of first pinions meshed with said first sun gear and said first ring gear which are rotatably supported from a first carrier; a second planetary gearset including a second sun gear, a third sun gear, a second ring gear, a second carrier driving said first output shaft, a set of second pinions rotatably supported by said second carrier and meshed with said second ring gear and said second sun gear, and a set of third pinions rotatably supported by said second carrier and meshed with said third sun gear and said second pinions; a transfer mechanism driving said second output shaft; a range clutch operable in a first state to couple said second ring gear to said input shaft and in a second state to couple said second ring gear to said first carrier; a lock-out clutch operable in a first state to permit rotation of said second sun gear and in a second state to couple said second sun gear to said stationary member; and a mode clutch operable in a first state to couple said transfer mechanism to said third sun gear, in a second state to couple said transfer mechanism to said third sun gear and said second carrier, and in a third state to couple said transfer mechanism to said second carrier.