Patent ID: 6612957
Filing Date: 2003-09-02
Classification: B60K,F16D,F16H

Abstract:
A transfer case comprising:an input shaft; first and second output shafts; a planetary gearset having a sun gear driven by said input shaft, an annulus gear, and a set of pinion gears rotatably supported from a carrier and meshed with said annulus gear and said sun gear; a torque transfer mechanism driven by said carrier and interconnecting said first output shaft to said second output shaft; a first bi-directional clutch operably disposed between said annulus gear and a stationary member, said first bi-directional clutch normally operable in a released mode to permit rotation of said annulus gear and which can be selectively shifted into a locked mode to prevent rotation of said annulus gear; a second bi-directional clutch operably disposed between said input shaft and said carrier, said second bi-directional clutch normally operable in a locked mode to couple said carrier for rotation with said input shaft and which can be selectively shifted into a released mode for permitting said carrier to rotate relative to said carrier to said input shaft; and a clutch actuation mechanism for controlling coordinated actuation of said first and second bi-directional clutches.