Patent ID: 8956259
Filing Date: 2015-02-17
Classification: B60K,F16H

Abstract:
1. A power transfer mechanism comprising: an input shaft; first and second output shafts; a first planetary gearset including a sun gear, a ring gear, a carrier and a pinion gear meshingly engaged with the sun and ring gears; and a shift mechanism for translating a shift sleeve to a first position where the input shaft is drivingly coupled to the first output shaft in a direct drive ratio connection and to a second position where a reduced speed drive ratio connection exists between the input shaft and the first output shaft as well as the input shaft and the second output shaft via the first planetary gearset, the shift system including a second planetary gearset having a planet gear fixed for rotation with a lead screw threadingly engaged with the shift sleeve, wherein rotation of the planet gear axially translates the shift sleeve, the shift system including a first clamp arm operable to restrict rotation of one member of the second planetary gearset to cause the planet gear to rotate in a first direction and a second clamp arm operable to restrict rotation of another member of the planetary gearset to cause the planet gear to rotate in an opposite direction.