Four-wheel-drive system for vehicle
Four-wheel vehicle drive system
Four-wheel vehicle drive system Patent #: 4441575
ApplicationNo. 06/495393 filed on 05/11/1983
US Classes:475/221, Differential or nondifferential planetary combined with differential (e.g., two differentials)180/249And means for locking out the differential means
ExaminersPrimary: Krizmanich, George H.
Assistant: Wright, Dirk
Attorney, Agent or Firm
International ClassesF16H 48/00 (20060101)
F16H 48/30 (20060101)
B60K 17/344 (20060101)
B60K 17/346 (20060101)
Foreign Application Priority Data1982-05-14 FR
AbstractThe transmission device comprises at least two differentials the first of which has two output semi-shafts each of which drives a driving wheel of a first axle of the vehicle. The transmission device includes a second differential interposed between the first differential 1 and one of the wheels of the vehicle, the input element 17 of the second differential 12 being driven by the corresponding output semi-shaft 11 of the first differential 1 and its output elements 21, 23, 24 driving, on one hand, said one of the wheels and, on the other hand, a transmission shaft 32 which is connected to a second axle of the vehicle. The first differential is of the epicyclic gear train type which divides the driving torque applied to its input element in an unequal manner between its output elements.